Good morning and welcome to OrthoPediatrics Corporation's Fourth Quarter and Full Year 2023 Earnings Conference Call. At this time, all participants are in listen-only mode. We'll be facilitating a question-and-answer session towards the end of today's call. As a reminder, this call is being recorded for replay purposes. I would like to turn the call over to Trip Taylor from the Gilmartin Group for a few introductory comments.

Thank you for joining today's call. With me from the company are David Bailey, President and Chief Executive Officer; and Fred Hite, Chief Operating and Financial Officer. Before we begin today, let me remind you that the company's remarks include forward-looking statements within the meaning of federal securities laws, including the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to numerous risks and uncertainties and the company's actual results may differ materially. For a discussion of risk factors, I encourage you to review the company’s most recent annual report on Form 10-K, which will be filed with the SEC in the near future. During the call today, management will also discuss certain non-GAAP financial measures, which are supplemental measures of performance. The company believes these measures provide useful information for investors in evaluating its operations period over period. Each non-GAAP financial measure referenced on this call, the company has included a reconciliation of the non-GAAP financial measures to the most directly comparable GAAP financial measures in its earnings release. Please note that these non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation or as a substitute for OrthoPediatrics financial results prepared in accordance with GAAP. In addition, the content of this conference call contains time-sensitive information that is accurate only as of the date of this live broadcast today, March 7, 2024. Except as required by law, the company undertakes no obligation to revise or update any statements to reflect events or circumstances taking place after the date of this call. With that, I would like to turn the call over to David Bailey, President and Chief Executive Officer.

Thanks, Trip. Good morning, everyone, and thank you for joining us on our fourth quarter and full year 2023 conference call. As we start all earnings calls, I'd like to begin by highlighting that we helped over 82,000 kids in 2023, a new record for OrthoPediatrics. Since inception, we've helped over 710,000 kids, and including Boston O&P, our combined organizations have helped more than 1 million kids. This continues to be the most important metric of success for OrthoPediatrics, and each year we strive to increase our impact and benefit more kids. In line with our pre-announcement from early January for the fourth quarter of 2023, we generated quarterly revenue of $37.6 million, representing growth of 21% compared to the fourth quarter of 2022. For the full year of 2023, we generated record revenue of $148.7 million, representing growth of 22% compared to the full year of 2022, driven by favorable leverage in the cash portion of G&A, disciplined expense management, strong margins, and healthy revenue growth. We are excited to report that we outperformed our original adjusted EBITDA expectations, producing a record adjusted EBITDA of $5 million in 2023. In addition, we're thrilled to see our prior acquisitions fully integrated and performing well with robust top line revenue contributions and profitability. Looking closer at the quarter, revenue and surgery scheduling was strong throughout, except during the final two weeks of December, when we started to experience lighter surgical volumes due to an uptick in RSV. After RSV rates rose rapidly at the end of December and extended into early January, volumes quickly returned to more normalized levels. Hospitals appear to be managing their spikes of the respiratory season better and mitigating the impact on case schedules. Altogether, volumes and staffing continue to improve month-over-month, and while still not running at full capacity, we are encouraged that recovery in the environment is tracking our expectations for modest sequential improvement. Overall, we feel this headwind is lessening and we will remain cautious until we see further normalization. The diverse nature of our business continued to benefit OrthoPediatrics in the quarter. The global trauma and deformity, domestic scoliosis, and OPSB business were very strong, offset by lower growth in international scoliosis. Fourth quarter global T&D was strong at 23% with growth led by sales of Pega products, PNP Femur, early sales of PNP Tibia, and growth within the OPSB franchise. U.S. scoliosis revenue bounced back aggressively in the fourth quarter with 35% growth, despite a very slow few weeks at the end of December; new scoliosis users continue to increase significantly across the response and ApiFix product lines. Overall, global scoliosis growth was slightly muted by a continuation of slower than expected ordering in our Latin and South American business, resulting in a 31% reduction in OUS scoliosis sales, negatively impacting overall growth. We expect OUS scoliosis to rebound in 2024 and act as a tailwind for the year beginning as early as Q1. With multiple opportunities including continuing legacy product growth, several key new organic product launches, Pega sales expansion, normalization of international markets, positive longer-term ApiFix data publications, a newly formed and rapidly expanding specialty bracing business OPSB, and an early start in digital healthcare, we are confident in our growth prospects for 2024 and beyond. Importantly, we remain in an extremely secure financial position and are confident that our current balance sheet enables us to execute our long-term strategy without additional equity capital. Therefore, we are reiterating our revenue guidance for the full year 2024 of $197 million to $200 million, including Boston O&P historical revenue of $25 million, representing overall growth of 32% to 34%. We are also issuing our full year EBITDA guidance of $8 million to $9 million and our expectation for set deployments of less than $20 million, as we continue to focus on improving profitability and reducing cash usage. We closed 2023 on an extremely high note. We achieved a record number of children helped, record revenue, and generated record adjusted EBITDA. We continue to balance top line revenue growth with improved profitability on our way to cash flow break-even sooner, a trend we expect to carry into 2024. Moving to our revenue segments. In the fourth quarter of 2023, we generated total trauma and deformity revenue of $27.1 million, representing growth of 23% compared to the prior year period. Strong performances from Pega products, trauma, Ex-Fix, and OPSB led revenue growth in the quarter. We saw continued record Pega product performance with substantial growth of 59% in the U.S. and 32% outside of the U.S. Sales of Pega continued to be better than we ever expected and as we more deeply penetrate our U.S. accounts with the full Pega product portfolio and ramp international sales, we believe Pega growth will continue to be very strong globally in 2024 and beyond. Elsewhere in T&D, we continue to take share across our entire T&D portfolio, a trend we expect to maintain for several years. We enjoy a leading share position in the T&D franchise within the U.S. children's hospitals, and we plan to continue to execute our market-dominant strategy with set deployment, new product development, and superior service. On the R&D side, we received FDA approval and beta launched the PNP Tibia system in Q3 and performed more cases than we expected in Q4. Initial surgeries have gone extremely well. So far, the surgeon usage rate has been higher than we forecasted, which bodes well for our full market launch of the PNP Tibia scheduled to start in the first half of 2024. We expect PNP Tibia to be an important growth driver in 2024 and for the next several years, and expect the full release of the new Pega GIRO product to make a positive impact as well. Driven by continued execution of our key account conversion strategy, we have seen an increase in the number of customers and the quantity of products used. Now with more high technology products coming to the market and a robust pipeline that was strengthened by the Pega acquisition, our T&D business is positioned to deliver sustainable growth over the next several years as we execute our long-term strategy to capture greater than 50% market share. We also have several prominent R&D projects in process within the surgical side of the T&D business. We're making great progress on the development of our entirely new pediatric plating platform, the P-3 project, which we expect will be world-class and spawn further share-taking opportunities for us within our plating franchise. We're also making solid strides on new external fixation devices that will continue the growth trajectory of our X-6 franchise. Further, we expect numerous new EU MDR-approved products that will be launching in the EU market in the coming year to be impactful. Our OrthoPediatrics non-surgical specialty bracing business, our OPSB, continues to perform extremely well, and I'd like to spend a little more time today outlining this significant opportunity that we have here. We recently announced the official OrthoPediatrics specialty bracing brand or OPSB, featuring a new website that incorporates the full MDO Clubfoot and RHINO product portfolio, along with several new products as well as the acquisition of Boston O&P. We believe the OPSB franchise represents a large new source of capital-friendly revenue growth. It's estimated that 80% of the pediatric orthopedic care happens before and after surgery, and we're extremely excited to now be better positioned to address this important segment. We estimate the U.S. non-surgical specialty bracing market is at minimum $775 million in total and conservatively $500 million of opportunity in the top 300 children's hospitals. Importantly, these custom fit braces do not require the upfront capital investment in consigned inventory or instrument sets. It has always been our aspiration to surround the pediatric orthopedic surgeon with all the products they need to treat children, and we're thrilled about this opportunity to provide our surgeon customers with more of the products they use to treat their patients every day. Boston Orthotics & Prosthetics is the only sizable company with an exclusive focus on pediatric orthotic management, offering leading custom bracing, orthotic, and prosthetic technology for the non-operative treatment of children whose lives have been impacted by scoliosis, plagiocephaly, and various neuromuscular disorders. Their portfolio of some of the most advanced individualized braces available to treat pediatric orthopedic conditions includes custom pediatric-specific Boston bracing for scoliosis, lower limb orthosis, and dynamic movement orthosis, DMO, as well as the Boston Band for plagiocephaly. Partnering with world-class medical facilities, including Boston Children's Hospital, Children's Hospital of Philadelphia, Nationwide Children's Hospital in Columbus, Ohio, and Phoenix Children's Hospital, just to name a few. Boston O&P maintains 26 patient care clinics, primarily concentrated in the Northeast. Boston O&P's annual historical revenue is approximately $25 million. As we mentioned on our previous calls, we continue to successfully execute an aggressively built strategy in OPSB and anticipate it to grow very rapidly in the coming several years. We see many of the same characteristics in the OPSB opportunity that we witnessed when we started OP 17 years ago. These include a large $775 million U.S. TAM, $500 million of which is in the top 300 U.S. children's hospitals, very limited competition, a general lack of ongoing innovation, and the opportunity to provide an elite level of customer service and support clinical education and training. We also see an opportunity for strong margins, healthy profits, and the potential to build a large business in a very capital-friendly manner. Beyond all of that, non-surgical specialty bracing fits with our goal of providing our customers with all of the products they need to treat children with orthopedic conditions and building further brand loyalty across our entire surgical and non-surgical portfolio. We do not plan to just scratch the surface of this segment of the pediatric orthopedic market, and we believe the Boston O&P acquisition makes that very clear. This is another market dominance play, where we plan to be very aggressive and scale this business rapidly until we are the clear-cut market leader. This has been a historically fragmented market and we're able to leverage our current channel to increase access and, most importantly, provide the service required to achieve optimal patient outcomes in a way that allows us to increase the partnership with all of our customers. While the integration of Boston O&P will happen throughout 2024, we expect the rest of the OPSB franchise to organically grow aggressively this year. Once integrated, our strategy to aggressively grow Boston will produce many years of future growth. Our strategy for the OPSB business is rooted in three core initiatives that we believe will enable OrthoPediatrics to deliver outside growth. These include salesforce expansion to drive adoption and scale usage, product development to build a competitive and comprehensive portfolio, and the addition of new clinics to enhance profitability. While we're in the early innings of this growth journey, we believe we are well on our way to growing this business to be in excess of $100 million in the coming years. Turning to the first initiative of salesforce expansion. In anticipation of the Boston O&P acquisition and to support the OPSB business as a whole, we have been preemptively recruiting OPSB-specific sales representatives that will be integrated into our existing agency sales network. We continue to actively recruit and train new associates, and so far we are pleased with the types of people we are attracting. With our pre-existing customer relationships, we expect to see rapid organic revenue ramp in each territory where our new OPSB reps are partnering with our existing surgical sales teams. Regarding the second initiative, product development within the MDO team in Iowa, the OPSB team in Warsaw, and now the Boston O&P team at our OPSB headquarters in Boston, we are now staffed to deliver our aspiration to launch four to five new products every year beginning in 2024. This cadence, along with the launch of several products in 2023, such as the MP light, MP plus the move bar DF2, the Rhino cruiser, and the Aura Medical Levity device, sets us up nicely for strong growth. Beyond these product launches and partnerships, there will be several more in the coming months and quarters supporting our thesis that we can build a scale business in this space in the coming years. Looking at the third initiative, over the last several years, we have completed multiple acquisitions and partnerships, all of which we have successfully grown and will continue to grow, but never have we seen such a favorable response from our customers as when we announced our partnership with Boston O&P in early January. This is a true testament to the legacy of amazing service, products, and patient care that Boston O&P has provided our customers through their 26 clinics, largely in the upper New England. Our customer feedback makes clear their desire to have a true partner in the non-surgical treatment of their patients and validates the large unmet need in the non-surgical support of their patients. In addition, it signifies our customer support of our growth strategy to scale Boston O&P to the rest of our 300 children's hospitals around the U.S. and in certain international markets. It'll take us a little time, but we feel this is an important first step that will open a larger opportunity for our company. Importantly, the operating economics for each of our existing clinics and future clinics is favorable for OrthoPediatrics. Generally speaking, we expect modest setup costs with limited additional capital outlay consisting mainly of leased office space, limited buildout, and staffing orthotists growing with the scale of the opportunity. Consistent with Boston O&P's historical revenue, we expect each new clinic will have the capacity to generate between $1 million and $3 million in revenue and produce a profit rapidly once fully operational. Again, it will take us some time for us to integrate Boston O&P and ramp the strategy, but we are already working to build a large funnel of opportunity and expect this to have a material contribution to revenue growth as early as 2025. Moving to the scoliosis business. In the fourth quarter of 2023, we generated revenue of $9.7 million, representing global growth of 20% compared to the prior year. This global growth was led by an extremely strong domestic performance of 35% growth and muted by a few slower weeks in the back of December due to RSV rates and a slower quarter internationally. Fourth quarter international sales declined by 31% and were lighter due to continued chopping ordering patterns from a few large international stocking distributors in Latin and South America. Despite this, we started to see a rebound across the international scoliosis business, and we expect improved international scoliosis in 2024 as we lap these difficult comparables, Latin and South America and ordering improves, and new revenue growth opportunities materialize as we launch scoliosis in Europe. We're very proud of the way this business has rebounded and have a clear line of sight into continued improvement for the coming year. A highlight in the quarter is the success of our U.S. scoliosis business, which outpaced a rebounding international business. The fourth quarter saw strong U.S. growth of 35%, driven from more users of the response and ApiFix and the successful execution of new launches this year. In addition, we're pleased to report that the surgeons from the three largest sites to transition to new practice locations are now settled in and have ramped up to speed, starting to perform more cases and returning to more normalized levels. This significant growth in U.S. scoliosis is representative of both the strength of this business and the opportunity we have for the future. We are bullish on 2024 scoliosis growth, as we exit 2023 with 25% more total users of response and ApiFix, several new products that were launched in 2023, such as response cannulated screws and response power, strengthening ApiFix data, a robust pipeline of 7D placements, and an improving international outlook. Further, the 2024 R&D pipeline is rich with extremely novel technologies that solve major unmet needs for our customers, specifically for patients with early-onset scoliosis, an area we've historically never had products. We recently announced the FDA approval and beta launch of our first EOS product response rib and pelvic, and expect to have the new vertiglide growing spine system FDA approved in 2024. Beyond that, we'll launch our new rod reduction instrumentation in 2024 that will support both the response spine system and our new fusion system currently in development. Lastly, we continue progress on the development of our electromechanical growing rod, although its launch will be a few more years. Notably, U.S. surgery scheduling trends strengthened late in Q3 and continued into Q4, but for a few weeks at the end of the year, we expect this strength to continue into 2024 as the elective market normalizes. In the fourth quarter of 2023, we generated international revenue of $9.3 million, delivering 13% growth on top of 67% growth in the fourth quarter of 2022. Fourth quarter of 2023 growth was led by extremely solid performance with our T&D products offset by slow scoliosis sales to stocking distributors in South America. We're pleased to see a continuation of the rebound in our international business in the fourth quarter and expect it to continue throughout 2024. International agency market sales continue to be particularly strong both in trauma and deformity and scoliosis. Progress in our German direct sales model continues to track favorably and should produce good growth in 2024. We have onboarded several new users and we look forward to increasing penetration in the German market. We expect strong Pega product sales to continue into 2024 and likely 2025, as we deploy inventory and train our sales channel. Despite the scoliosis softness we experience from Latin and South America, we're making great progress launching scoliosis in Europe. We're performing first surgeries in new markets and with new surgeon customers. Additionally, we're making good headway and growing Australia and entering New Zealand, as we have had added cases and leadership in support of our longstanding agency partner and we’re starting cases in Canada following recent approvals and launch. Overall, we've got a really nice setup for our international business and we believe that 2024 will show great improvement beginning as early as Q1. That brings us to surgeon training and education. In Q4, we hosted 98 unique training experiences for over 2,600 healthcare professionals. Among these events, our premier sponsorship of the Akron Resident Review Course and the Annual International Pediatric Orthopedic Society Meeting, IPOS, which takes place in Orlando every December. In 2023, we unveiled a new sponsorship level for the Pediatric Orthopedic Society of North America, POSNA, and IPOS as the first-ever Emerald level sponsor. Our presence at IPOS this year was marked by multiple hands-on workshops featuring five sessions, including one for our new specialty bracing business and the DF2 brace for kids with femur fractures. The full year 2023 saw record numbers of educational moments for pediatric orthopedic surgeons and other allied health professionals. Globally, we advanced our partnership with multiple surgical societies, including the European pediatric orthopedic society, as well as special scoliosis meetings in the UK and Germany, each hosting several hundred European surgeons. We conducted a total of 391 learning experiences for our surgeon customers, thus advancing our ongoing commitment to training the next generation of pediatric orthopedic surgeons and leading innovation in our subspecialty around the world. Lastly, continued focus on our people is a critical part of our competitive advantage, which is why it's so important that we recently announced for the eighth time OrthoPediatrics was named as one of the best places to work in the state of Indiana. We are committed to fostering a culture that is positive, engaging, and allows our associates to do their best work. This important culture allows us to further our mission and successfully help more kids all over the world. With that, I'd like to turn the call over to Fred to provide more detail on our financial results.

Thanks, Dave. Our fourth quarter 2023 worldwide revenue of $37.6 million increased 21% compared to the fourth quarter of 2022. Growth in the quarter was driven primarily by the strong performance across global trauma and deformity, domestic scoliosis, and the OPSB. U.S. revenue of $28.3 million, a 24% increase from the fourth quarter of 2022, growth in the quarter was primarily driven by our trauma and deformity product lines, scoliosis, and OPSB. We generated total international revenue of $9.3 million, representing growth of 13% compared to the fourth quarter of 2022, which grew by 67%. Growth in the quarter was primarily driven by trauma and deformity offset by lower scoliosis sales to stocking distributors in South America. In the fourth quarter of 2023, trauma and deformity global revenue of $27.1 million increased 23% compared to the prior year period. Growth in the quarter was driven primarily by share gain across our entire portfolio with strong contributions from Pega products, trauma, Ex-Fix, and OPSB. In the fourth quarter of 2023, scoliosis revenue of $9.7 million increased 20% compared to the prior year period. Growth was primarily driven by increased U.S. growth of 35%, partially offset by canceled cases in late December from RSV and lower than expected orders in Latin and South America. Finally, Sports Medicine/Other revenue in the fourth quarter of 2023 was $0.9 million compared to $0.9 million in the prior year period. Turning to set deployment, $5.9 million of sets were consigned in the fourth quarter of 2023 compared to $6.3 million in the fourth quarter of 2022. For the full year of 2023, we deployed $22.0 million compared to $20.1 million in 2022. The increase was driven by significant new product development deployments, significant Pega deployments, as well as multiple consigned 7D units. Touching briefly on a few key metrics. For the fourth quarter of 2023, gross profit margin was 71.0% compared to 68.5% for the fourth quarter of 2022. The slight increase in gross profit margin was driven primarily by lower set sales to international stocking distributors. Total operating expenses increased $5.2 million or 18% to $34.8 million in the fourth quarter of 2023. The increase was mainly driven by increased volume-related commissions as well as incremental personnel required to support the growth of the company. Sales and marketing expenses increased $1.5 million or 14% to $12.4 million in the fourth quarter of 2023. The increase was primarily driven by increased sales commission expenses. General and administrative expenses increased $3.0 million or 18% to $19.6 million in the fourth quarter of 2023. The increase was driven primarily by the addition of personnel and resources to support the continued expansion of the business and an increase in depreciation and amortization expense. Research and development expenses increased $0.7 million or 35% to $2.7 million in the fourth quarter of 2023, driven by additional resources as well as increased payments to third-party providers. Total other income was $1.2 million for the fourth quarter of 2023 compared to $0.4 million for the same period last year. Adjusted EBITDA was $1.3 million in the fourth quarter of 2023. This compares to a loss of $2.2 million in the fourth quarter of 2022. This increase was driven by incremental revenue combined with cost controls across the organization. Net loss for the full year of 2023 was $21.0 million compared to a net income of $1.3 million last year. Fair value adjustment of consideration for the total year 2023 was a favorable $3 million compared to a favorable $26 million in 2022. Adjusted EBITDA for the full year of 2023 was $5.0 million compared to $0.2 million for the full year of 2022. We ended the fourth quarter with $82.3 million in cash, short-term investments, and restricted cash. As of December 31, 2023, $10.0 million had been drawn on our new term loan with mid cap, post-closing the Boston O&P acquisition in January of 2024. Our cash and restricted cash balance was approximately $60 million. With our current cash position as well as our new debt facility, we're well capitalized to continue to execute on our strategy. Given our strong balance sheet, positive adjusted EBITDA, our line of sight to cash flow breakeven, and our recent acquisitions, we are in a position of tremendous strength. Turning to guidance, we are reiterating our expectation for full year 2024 revenue to be in the range of $197 million to $200 million, representing year-over-year growth of 32% to 34%. Additionally, we now expect to generate between $8.0 million to $9.0 million of adjusted EBITDA in 2024. We expect less than $20 million of new set deployment in 2024, representing our continued focus on driving the business to cash flow breakeven sooner rather than later. Lastly, our S3 shelf registration filed in 2020 was fully sold in 2022. In keeping up with good corporate housekeeping, we will likely establish another universal shelf in 2024. As discussed previously, we have no need or plans to raise capital in the near term, but we believe maintaining a shelf is consistent with good corporate practices. I'll now turn the call back over to Dave for closing remarks.

Thanks, Fred. As we look back on 2023, we're proud of all that we've achieved and are confident that we have the right growth drivers in place for continued success in 2024. We expect positive trends in the business to continue, including robust top line revenue growth and continued profitability growth as we move toward cash flow breakeven earlier than anticipated. In addition, in 2023, we launched eight new products including RESPONSE Power Scoliosis, the GIRO Growth Modulation System, Pediatric Nailing platform Tibia System, the DF2 Brace, Mitchell Ponseti Plus Bar, and the Levity Device. We continue to expect strong performance from our legacy products as a result of our heavy investment in set deployments in 2022 and 2023. However, our recent acquisitions, along with ApiFix and OrthoX, and our most recent organic product launches such as PNP femur and tibia, Drive Rail, and DF2 require less capital deployment to drive growth due to a faster return on invested capital. This combined with the launch and the growth of the OPSB franchise ensures we can maintain our high rate of growth while using less cash for inventory deployment, thus ensuring we drive to cash flow breakeven much sooner than earlier anticipated. All of our long-term plans, including profitability growth, are supported by our robust balance sheet, strong cash position, and access to debt. I've been with OP for nearly 17 years now, and I'm not sure I've ever been more excited. We are in an extremely strong position with all the tools in place to help more children than ever before. And I think our customers feel the same way. Together our OP associates, our customers, and our shareholders are building something special, and that is having a profound impact on the lives of children. The future is bright for OrthoPediatrics, and we are just getting started. In closing, I'd like to thank our surgeon partners, my OP associates, our investors, and all the innovators in pediatric healthcare for standing together to help kids. Operator, let's open the call for Q&A.

Our first question comes from Matthew O'Brien with Piper Sandler. Your line is open.

So just maybe starting obviously with the Boston O&P commentary. First of all, and sorry, this is going to be a multi-parter, is that going to get split out separately, Fred? You're saying this morning clearly, you're not going to need additional capital because you have plenty of funding for that to build out these facilities because I don't think they're that expensive. And then how do we model this growth going forward off of this base that you have today as you're adding new clinics across the U.S.?

Boston is approximately 30% scoliosis bracing, custom braces, and the other 70% is deformity correction. And so that's how the sales will show up in those two segments going forward. The business has a different seasonality than our typical business. They don't have the big summer selling season the way we do in our scoliosis and deformity correction business. Their fourth quarter is a few points, few percentage points higher than the other quarters, and typically their first quarter is a few percentage points lower. The middle quarters are roughly 25% of the year. The growth of this business obviously we're still working on that for 2025, but we would expect this to grow faster than the overall business as the sales force becomes effective and new products are introduced, and we are looking to open new clinics starting next year. That does take some time to get the hospital to approve it, to find the facility, to get the obviously specialists trained in the pediatric space. But overall, I would say that this segment is going to grow much faster than the overall business for the next several years.

Matt, I think what we're trying to signal here is that the clinic side, kind of as I walk through the three-point strategy, we expect no question as we add sales reps, and we've already done that. We expect the sales of the OPSB franchise, which is still inclusive obviously of MD Orthopedics and Rhino and Aura and the organic products that we launched last year, DF2 and the new stuff we're going to launch this year, we would expect that business to continue to grow well in excess of 20%. That's kind of what it's done ever since we acquired MDO and then started adding products to that. I think what we're saying here is, it's going to take a little bit of time on the clinic side, obviously, to get that side of the Boston business ramped. But we're definitely expecting growth in the rest of that business again, as we've seen for the last couple of years.

And just on the upfront cost side, can you just comment a little bit there? And then I'll just ask my second question here, just expectations for ApiFix this year. Is that going to start to be a bigger contributor or is it more still the kind of a ‘25 event?

Yes, I think our view on ApiFix is the data continues to get stronger. There's no question. As the data gets stronger, we expect this to continue to go up into the right. I think where we have kind of come off this position that there's going to be some quarter or some specific moment where it's this watershed moment where every surgeon agrees that this is the right treatment. But there's no question that the entire non-fusion segment of pediatric spine is super interesting. It's still embryonic; it’s still generally growing with a lot of questions. We think we're answering those questions with the data, and generally, we expect ApiFix to continue to outpace the growth of our fusion business. And that's kind of how we're modeling it for 2024.

And specifically on the cost. So today Boston has 26 clinics. They're all leased facilities. So really the cost if we were to open a new facility is minimal upfront. It's just building out the space, hiring and training the actual clinicians, and then hiring more clinicians as the volume ramps. So I don't know, million dollars, I would say max to open one of these, maybe less. And then the revenue starts coming in pretty quick because we're not going to open one unless we have commitments from the surgeons at the hospital that obviously they're going to be using the clinic.

Our next question comes from Rick Wise with Stifel.

Just to start off on a big picture question, if I'm hearing you correctly, it sounds like a lot of the headwinds that you've experienced over the last year or so, are either going away, gone away or sort of resolved on the staffing front, on the RSE front, on the variety of things. And so, I mean, that sounds very encouraging. Am I hearing you correctly, Dave?

Yes, I believe we are seeing progress this quarter, and I anticipate that this trend will continue as we move into Q1. We mentioned previously that we think any challenges will be behind us by mid-year. However, we remain cautious because June, July, and August are crucial months for our surgical operations. Until we navigate through those months, we cannot consider ourselves completely out of the woods, but it is promising to witness these improvements. It's also positive to note that as our business expands in the specialty bracing area, many of the difficulties we faced in the operating room are not present there. This growth allows us to lessen the impact of environmental challenges we have encountered in recent years. Overall, we are encouraged that the business will be less vulnerable to these types of disruptions moving forward.

Fred, could you help us think about the quarterly setup for the year? It went by quickly. I wasn't certain if you were referring to a specific product or the overall situation. I thought you were discussing potentially improved first quarter revenues overall, but can you help us establish the right perspective for considering the first quarter, especially with the Boston O&P mix included? Thank you for the specific guidance you provided regarding the quarters, but how should we understand the overall flow of the new OrthoPediatrics quarterly performance for the 2024 year?

Absolutely. So traditionally, pre-COVID in particular, because the last several years have been so unusual, the first quarter is typically around 5% or 6% lower than the fourth quarter. And so if you think about the legacy business in those factors, the first quarter revenue would come down. However, with the addition of Boston, that is going to generate a first quarter revenue number that’s actually higher than the fourth quarter. And I would bet or I would assume that it's probably in that $41.5 million to $42 million range. So definitely a nice increase over the third quarter, over the fourth quarter at $37.6.

In the past, you've provided insights on the overall company quarters as a percentage of sales, guiding us to the $197 million to $200 million range. How would you describe that percentage of sales in general terms, considering the flow of the quarters as you look ahead to 2024?

I mean, Boston is still right, $25 million out of $200 million. So it's not going to have a dramatic first year impact on changing the overall metrics. So the third quarter we still would anticipate is by far the largest, followed by the second quarter. And then the fourth quarter and the first quarter obviously be the smallest number. So I think it's going to be pretty similar, honestly to historical with a slight change with Boston, but not much.

And I'm going to squeeze in one more if you don't mind. I know that you don't guide to gross margins, but if I'm hearing you correctly, Boston's going to be above average. Also, you've got new products launching, you've got recovery, a variety of other things. Help us understand a little more clearly the again the cadence and how we should be thinking about gross margins in ’24? And put that in perspective relative to the as always seasonally slow fourth quarter performance given the mix of business typically.

Yes, absolutely. So the fourth quarter of 2023, gross margin at 71%, obviously lower than the third quarter, which is always our highest revenue and highest gross margin quarter. The 71% was an improvement year-over-year versus the 68.5% we saw in the fourth quarter previously. And so the gross margin in 2024, I would expect would continue to follow the sales. So it's going to be highest in the third quarter, a little lower in the second quarter, come down again in the fourth quarter, and a little softer in the first quarter. I think overall, the business was under 75% in 2023, and we would expect to see a similar type of result between 74.5% and 75% for 2024. The Boston business gross margin is good. If you think about it, it's really two businesses in one. It's a manufacturing business, and so we get the manufacturing margin from their products they manufacture and it's a retail business in the clinics, so we're getting the retail pricing and the margins associated with that. And so overall, very strong similar gross margins to our overall business, but historically they've had very little sales commissions, if you will. So the contribution margin from that business is very strong, better than our legacy business. And even adding some sales force into that to grow higher revenue, the contribution margin is still very strong in that business, which is very attractive, obviously to the bottom line for us.

Our next question comes from Ryan Zimmerman with BTIG.

I wanted just to follow up. A couple of questions for me. A lot has already been asked on the Boston O&P side. Just first, Dave, the last few weeks of December, any quantification there to think about and that impact and the flow-through, potentially the first quarter as a result of some of those cases?

I guess what I would say is that we were really, really doing well throughout the entirety of the quarter, and we saw a kind of a screeching halt in the last two weeks. Last two weeks are traditionally two of the largest weeks for us. These are weeks when kids are out of school. And so it was a pretty steep drop and kind of happened all of a sudden and it did extend into the early part of January. Maybe Ryan, it's a couple points probably of total top line revenue growth for us. And it was a bit unfortunate, but not a lot we can do about it. What we did see though in the quarter, so is this quarter now is that obviously after the hospital systems were hit seems like handling that much better, particularly on the elective surgical side and seeing a really nice rebound in Q1. It seems like cases that were scheduled are starting to get put back on and get done. And so, I think that's why you hear fairly bullish commentary about the way the hospitals are handling the RSV situation, how rapidly it went up, affected us and came back down here in the first quarter. And things seem to be really normal going forward.

And then just, you're going to build out more of this OPSB sales force. You already started doing that. When I think about kind of all the heads and FTs that are dedicated to OrthoPediatrics and I'm just kind of wondering if you could kind of size and scale kind of what that is relative to the existing sales force as your distributors and dedicated sales agents kind of ramp up over the coming years for OPSB?

So we've already factored some of those heads in. Obviously, we started some of the hiring here in Q4 and early in Q1. So just to be clear, the expense associated with that is captured in our guide for the $8 million to $9 million in EBITDA. I think orders of magnitude you might expect over the year for us to add or have maybe 20 people or so in the U.S. that are focusing more heavily or exclusively on the OPSB side of the business. And obviously that's up from zero this time last year. So that's why we're pretty bullish about it, that that sales force's capacity to help us drive revenue with the MDO products and RHINO and Aura and all the DF2, all the things that we've come out with in the last year. But you have to remember that these people aren't spending time standing in the operating room, right? And so it doesn't take as many people to cover the geographies that we want to cover. We also have obviously really strong relationships with our surgeons in the operating room. And when you partner these OPSB sales force with our existing sales force and our existing sales force so far has been really great about receiving these people in and working as a team. We just think the combination of the great people we have in the field already and the 200-plus strong OR-based sales reps that we have combined with 20 or so of these more clinical-based sales reps is a real tonic for us to grow. And Ryan, over the course of the next several years, we'll see maybe that sales force grows out larger, but we're not committing that at this point.

Just real quick one quick modeling question for Fred. You already gave the split between scoli and deformity correction on the Boston O&P business, and it's all U.S. based, though, right Fred? I mean, is there any international revenue there as just from a modeling perspective want to make sure we take care of that correctly?

We haven't clarified that. It is 100% domestic as of today. But that in ‘25, ‘26, ‘27, may be an opportunity for us to enhance the growth of that business as well.

Our next question comes from Mike Matson with Needham & Company.

Hey guys, this is Joseph on from Mike. So you guys have a lot of growth prospects moving forward, international expansion, Pega, X6 ramping, new product launches. But I guess the comments today, if it seems like OrthoPediatrics has shifted its strategy to favoring maybe growth and profitability or profitability over growth. So I guess maybe could you just give a little bit more color, a little bit more of your thoughts on maybe the shift in the strategy and why that's good moving forward?

Yes, Joseph, I don't think I would characterize our strategy as a focus on profit over growth. We're heads down focusing on growth and also recognizing that balancing growth with profitability, with the aspiration to get to cash flow breakeven is probably a more prudent and rational course, particularly in the current financial environment. And so this is not a new, I guess I don't view this as a new thing for us; over the last three years, this has been our aspiration to continue to focus more heavily on top line revenue growth. And I think that was one of the reasons why we're excited about the OPSB side, all the product launches going on the legacy side, and all the sets that we've deployed over the last two years. We think all of those are going to generate really nice growth for the business for the next several years, but we also think that the growth is going to be more profitable growth and the cash usage associated with that is going to be lower, which is kind of what we've been trying to get to over the course of the last three years. And I think we're well-positioned to do it. So we still see this as an aggressive top line growth strategy. There's no question about that. We just think that it's a bit unique in that this is an aggressive top line growth strategy that's also going to be profitable and generate its own cash. And I think that's pretty unique right now in the marketplace.

Maybe just touch on that a little bit more. We estimate your organic growth to be in the mid-teens or so for the last two years, but do you think you could maybe get back to the 20% plus number? Or do you think mid-teens is more of a realistic expectation for organic growth moving forward?

The guidance suggests a mid-teens growth rate, and we believe our internal efforts, especially with the OPSB and legacy product launch, indicate a potential for revenue growth exceeding mid-teens. However, we will remain cautious in our projections. While our guidance reflects this calibrated approach, our team is committed to achieving a growth rate above 20%, and with the acquisition, we expect it to surpass 30% for 2024. We are establishing the necessary drivers, particularly in the OPSB sector, where we see a low market share and substantial competitive opportunities within a large total addressable market. We view this as a catalyst to possibly reach upper teens growth or even exceed 20%. Achieving this is significant given our larger scale compared to the past when we consistently grew at rates around 20% to 22%. Our goal is to maintain that trajectory, although we are not ready to commit to those numbers at this point.

Our next question comes from Dave Turkaly with Citizens JMP.

I think when you announced the BOP deal, it said $22 million upfront. I was just curious, if you might comment on any milestones or sales-related targets. Is that the all-in price or is there additional payments to come?

That is the all-in price. There are no contingent additional payments.

That sounds like a pretty good deal given the sales base there, but so again, thanks for all the detail in the business. To follow up on, I think it was Ryan's question about the scoli business, the RSV, the impact maybe being a couple points. When you look at the lower sales to stocking distributors in South America, maybe the lower than expected orders in Latin and South America. I mean, is that another point or is that, I guess I'm trying to quantify. You grew 20% in scoli and you had kind of three things you called out and I don't know, maybe it's even more than a couple points.

Yes, the situation we've experienced in Latin America over the past few quarters was quite unexpected and had a significant impact on the overall growth of scoliosis and the company's growth as a whole. It was disappointing to observe. However, at this point, we feel optimistic that this is behind us, and we are ready to diversify our scoliosis business now that we are in markets like Canada and the rest of Europe. Although this is currently a small segment, we anticipate growth from it in 2024 since it starts from a zero base. So, we believe that the challenges are now in the past. We haven't specifically quantified the impact, so I can't say if it was just a couple of points, but we do not expect it to persist. As we move into 2024, we expect this to become a positive factor for our business rather than a challenge.

And just one last one if I could. The OB&P you mentioned gross margin. I think you said the profile is pretty similar, but operating margin-wise, I'm just curious if that's higher than sort of where you stand today. And I know the EBITDA guide of 8 to 9 was higher than the street seven. I'm thinking some of that's coming from that acquisition, but any comments sort of on the bottom line contribution as that scales?

Yes, absolutely. So very similar to MDO when we bought it, this Boston business is profitable. It is positive adjusted EBITDA, it's positive net income, positive cash flow. And however, historically hadn't been growing tremendously fast. And so we will be investing a little bit of money into that business, obviously with the sales force. But yes, you are correct in assuming that that business is more profitable than our overall business was in 2023. That is correct. And we would expect that to continue going forward.

Our next question comes from Samuel Brodovsky with Truist Securities.

I'll just ask one more on Boston to start off, I think you'd mentioned a $1 million to $3 million revenue number per clinic, and with 26 clinics that implies a pretty nice opportunity to ramp revenue there without adding new clinics. Is that something we should think about being able to be achieved quickly sort of after the integration is completed? Or is that going to be a steady ramp over time as new products come in?

So it definitely is an opportunity for us to drive the efficiency of the existing clinics and the kind of flow of patients through the existing clinics as well as the products used at the existing clinics, with the added sales channel. It's not something we've modeled aggressively yet because it's so new, but I do think you're right, it's probably an opportunity there. And part of the reason that is such is that these clinics are primarily surrounded around Boston, around Philadelphia, kind of upper Northeast, which are major population centers as well as major hospitals that are using Boston's products. And so, it takes a few maybe more clinics in those areas where patients are coming from a longer distance because of their catchment. And so maybe some of those clinics are doing a little less than they would if there were fewer. It isn't our intent to consolidate, but it is our intent to drive more volume through the existing. So that is a possibility. But I also think you've got this right though. And when you think about our capacity over the course of the next several years, our intent is to scale this to every major children's hospital jurisdiction in the United States and then some internationally. And when you start thinking about those 26 clinics, we think they're serving, give or take, 15 children's hospitals right now. I mean, when you think about the mass there, it is a really big opportunity for us to scale this into the other 285 children's hospitals that aren't active users or don't have active Boston clinics in their area. So yes, that's obviously why we're one of the reasons why we think we should be pretty excited about the opportunity here.

And then just switching to guidance, can you just remind us what's factored in terms of sort of respiratory illness seasons as I know I think coming into ‘23 you factored in pretty worst-case scenarios? Is that how we should be thinking about it this year? And then just philosophically it's a pretty tight range, especially given the acquisition coming into revenue. Just how'd you settle out at the range and how should we think about the high and low end?

So similar to last year, 2024 guidance assumes that we will see a similar RSV environment in the fourth quarter of 2024 that we saw in 2023. So we're not assuming that it goes away; we're not assuming it's worse. And as far as the guidance goes, it's a tight range. We have a pretty good line of sight on the core business as well as Boston coming into this. And it is kind of what it is, I guess. So I don't have any philosophy on why it's as tight as it is, but we're pretty confident in those numbers.

There are no further questions. I'd like to turn the call back over to David Bailey for any closing remarks.

Thanks, operator. Well, I appreciate you all joining us today on the call. Today's call is a little bit longer, just wanting to make sure that we can fully explain the Boston acquisition and the opportunity we have on OPSB combined with everything else that's going on. So thanks for your time today, and we look forward to seeing you all at meetings in the next several months. Have a great day.

Thank you for your participation. This does conclude the program. You may now disconnect. Good day.