Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews最新文献

{"title":"Vascularized Transfer of Second Metacarpal Base for Treatment of Capitate Osteonecrosis.","authors":"Amber Leis, Ekaterina Tiourin, Jacqueline Geissler, Milan Stevanovic","doi":"10.5435/JAAOSGlobal-D-24-00095","DOIUrl":"10.5435/JAAOSGlobal-D-24-00095","url":null,"abstract":"<p><strong>Background: </strong>Capitate osteonecrosis is a rare condition that mainly presents in young patients with chronic wrist pain. Treatment aims to address pain, arthritic changes, or carpal instability.</p><p><strong>Methods: </strong>We present the surgical technique and outcomes of using a vascularized pedicled second metacarpal base transferred on the second dorsal metacarpal artery to treat capitate osteonecrosis in a 20-year-old female secretary, former gymnast, and a 25-year-old female student with acute lymphoblastic leukemia. These patients presented with idiopathic chronic wrist pain with MRI showing capitate osteonecrosis with preserved carpal height and intact articular cartilage.</p><p><strong>Results: </strong>After 2 years of follow-up, both patients endorsed pain resolution and demonstrated preservation of wrist motion and grip strength with evidence of capitate healing on plain radiographs. Case 1 demonstrated grip strength 60 lbs., pinch strength 5 lbs., and wrist flexion-extension arc of 70 to 80°. Case 2 had grip strength 31 lbs., pinch strength 9 lbs., and wrist flexion-extension arc of 40 to 30° on the left.</p><p><strong>Conclusion: </strong>Vascularized pedicled second metacarpal base transferred on the second dorsal metacarpal artery can be successfully used in the management of capitate osteonecrosis and offers advantages over other vascularized bone grafts for capitate osteonecrosis.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11335336/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142005459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trichorhinophalangeal Syndrome Orthopaedic Manifestations and Management: A Systematic Review.","authors":"Emily Ellison, Steven J Grampp, Seth Ellison, Andrea Seeley, Mark Seeley","doi":"10.5435/JAAOSGlobal-D-24-00010","DOIUrl":"10.5435/JAAOSGlobal-D-24-00010","url":null,"abstract":"<p><p>Trichorhinophalangeal syndrome (TRPS) is an autosomal dominant genetic malformation disorder which is best characterized by both its craniofacial and skeletal abnormalities. The purpose of this paper is to identify the various orthopedic manifestations and management in patients with TRPS. A systematic search of PubMed, Ovid MEDLINE, and Cochrane Library was conducted. They were each individually searched for primary articles yielding information on the orthopedic manifestations and management of patients with TRPS. The goals and results of each of the included studies were described. Data regarding the demographics, orthopedic condition, treatment strategy, and outcomes were extracted and analyzed. 221 unique articles were retrieved, with 13 articles being included in the study. 26 patients with TRPS were identified. Trials of conservative management were reported for 14 patients, and surgical intervention was pursued for 8 patients. The mean age for surgery was 14.1 years. The most common orthopedic manifestations of TRPS are clinodactyly, Perthes-like changes, and coxa magna. Early identification and maintenance of TRPS is important for being able to monitor musculoskeletal health of the patients in order to prevent detrimental outcomes. Additional high-quality research is required regarding the orthopedic manifestations and treatment of this patient population.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11335335/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142005458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tendon Transfers in Reverse Total Shoulder Arthroplasty: A Systematic Review.","authors":"Eric S Warren, Eoghan T Hurley, Mikhail A Bethell, Bryan J Loeffler, Nady Hamid, Christopher S Klifto, Oke Anakwenze","doi":"10.5435/JAAOSGlobal-D-24-00174","DOIUrl":"10.5435/JAAOSGlobal-D-24-00174","url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study was to evaluate clinical outcomes after tendon transfers in the setting of reverse total shoulder arthroplasty (RTSA).</p><p><strong>Methods: </strong>PubMed and Embase were searched according to Preferred Reporting Items for Systematic reviews and Meta-Analyses guidelines to find primary clinical studies of any type of tendon transfer in the setting of RTSA.</p><p><strong>Results: </strong>Overall, 17 studies (level of evidence [LOE] I: 1, LOE II: 0, LOE III: 3, LOE IV: 13) met inclusion criteria, with 300 shoulders. Most patients were female (56.7%), with an average age of 68.7 years (range 19 to 89) and a mean follow-up of 46.2 months (range 6 to 174). 11 studies reported outcomes after combined latissimus dorsi and teres major transfer (LDTM) while eight studies reported on latissimus dorsi transfer only (LD). Improvements in commonly reported subjective and functional outcome measures were as follows: external rotation +32° (LDTM) and +30° (LD), flexion +65° (LDTM) and +59° (LD), Visual Analog Score -5.4 (LDTM) and -4.5 (LD), subjective shoulder value +43.8% (LDTM) and +46.3% (LD), and overall Constant score +33.8 (LDTM) and +38.7 (LD). The overall complication rate was 11.3%, including tendon transfer ruptures (0.7%), instability (3.0%), infection (2.0%), and nerve injury (0.3%). The all-cause repeat operation rate was 7.3%, most commonly for arthroplasty revision (5.3%). Subgroup analysis revealed that lateralized implants with tendon transfer resulted in markedly greater improvements in Constant score, flexion, ER1, and ER2 while medialized implants with tendon transfer had markedly greater improvements in Visual Analog Score, subjective shoulder value, and abduction.</p><p><strong>Conclusion: </strong>Patients undergoing tendon transfer of either combined LDTM or latissimus dorsi alone in the setting of RTSA have markedly improved subjective and functional outcomes. A moderate incidence of complications (11.3%) was noted in this patient population.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11321750/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141976916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Can Large Language Models (LLMs) Predict the Appropriate Treatment of Acute Hip Fractures in Older Adults? Comparing Appropriate Use Criteria With Recommendations From ChatGPT.","authors":"Katrina S Nietsch, Nancy Shrestha, Laura C Mazudie Ndjonko, Wasil Ahmed, Mateo Restrepo Mejia, Bashar Zaidat, Renee Ren, Akiro H Duey, Samuel Q Li, Jun S Kim, Krystin A Hidden, Samuel K Cho","doi":"10.5435/JAAOSGlobal-D-24-00206","DOIUrl":"10.5435/JAAOSGlobal-D-24-00206","url":null,"abstract":"<p><strong>Background: </strong>Acute hip fractures are a public health problem affecting primarily older adults. Chat Generative Pretrained Transformer may be useful in providing appropriate clinical recommendations for beneficial treatment.</p><p><strong>Objective: </strong>To evaluate the accuracy of Chat Generative Pretrained Transformer (ChatGPT)-4.0 by comparing its appropriateness scores for acute hip fractures with the American Academy of Orthopaedic Surgeons (AAOS) Appropriate Use Criteria given 30 patient scenarios. \"Appropriateness\" indicates the unexpected health benefits of treatment exceed the expected negative consequences by a wide margin.</p><p><strong>Methods: </strong>Using the AAOS Appropriate Use Criteria as the benchmark, numerical scores from 1 to 9 assessed appropriateness. For each patient scenario, ChatGPT-4.0 was asked to assign an appropriate score for six treatments to manage acute hip fractures.</p><p><strong>Results: </strong>Thirty patient scenarios were evaluated for 180 paired scores. Comparing ChatGPT-4.0 with AAOS scores, there was a positive correlation for multiple cannulated screw fixation, total hip arthroplasty, hemiarthroplasty, and long cephalomedullary nails. Statistically significant differences were observed only between scores for long cephalomedullary nails.</p><p><strong>Conclusion: </strong>ChatGPT-4.0 scores were not concordant with AAOS scores, overestimating the appropriateness of total hip arthroplasty, hemiarthroplasty, and long cephalomedullary nails, and underestimating the other three. ChatGPT-4.0 was inadequate in selecting an appropriate treatment deemed acceptable, most reasonable, and most likely to improve patient outcomes.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11319315/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141976915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variable Efficacy of Tranexamic Acid in Geriatric Hip Fractures Treated With Arthroplasty Versus Cephalomedullary Nails.","authors":"Sarah R Blumenthal, George W Fryhofer, Matthew K Stein, Steven E Zhang, Sean Looby, Samir Mehta","doi":"10.5435/JAAOSGlobal-D-24-00157","DOIUrl":"10.5435/JAAOSGlobal-D-24-00157","url":null,"abstract":"<p><strong>Introduction: </strong>Geriatric hip fractures are associated with high rates of disability and mortality. Many of these patients require perioperative and postoperative allogeneic blood transfusions, which carry several noteworthy risks. A growing body of literature supports the efficacy of tranexamic acid (TXA) in geriatric hip fractures, without sufficient data examining which subgroups are likely to benefit the most.</p><p><strong>Methods: </strong>In this study, we sought to evaluate whether TXA was associated with reduced blood loss and transfusions in a geriatric population undergoing hip fracture fixation at our institution during a 2-year period. The first year's data were collected in a retrospective fashion before the introduction of a quality control initiative encouraging TXA administration for all geriatric hip fractures. The second year's data were collected prospectively. A subgroup analysis was conducted for patients who underwent arthroplasties.</p><p><strong>Results: </strong>Among the pooled cohort of patients undergoing surgery, TXA showed no benefit over control subjects for reducing blood loss or transfusion requirements. However, the subgroup of patients undergoing arthroplasty procedures showed a notable decrease in total blood loss and total units transfused during hospitalization.</p><p><strong>Discussion: </strong>These results suggest that TXA may be most beneficial when targeted to arthroplasties performed for geriatric hip fractures.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11319306/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141914253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adolescent Idiopathic Scoliosis in Siblings Treated by Surgical Deformity Correction.","authors":"Hong Jin Kim, Javier Pizones, Dong-Gune Chang","doi":"10.5435/JAAOSGlobal-D-24-00160","DOIUrl":"10.5435/JAAOSGlobal-D-24-00160","url":null,"abstract":"<p><p>Adolescent idiopathic scoliosis (AIS) in siblings reflects genetic hypothesis; however, few studies have been published. Furthermore, to the best of our knowledge, there have been no reports in the literature of both siblings with AIS who underwent deformity corrections. A 15-year-old adolescent girl visited our clinic with back pain after recognition of the incidental findings of a scoliotic curve in the spine. Whole spine radiographs detected Lenke classification type 3CN. The patient underwent deformity correction with posterior instrumented fusion from T4 to L3 with thoracoplasty of the right 7th to 10th rib. Four years later, her 16-year-old younger brother also visited our clinic with back pain after recognition of the incidental findings of a scoliotic curve in the spine. Whole spine radiographs detected Lenke classification type 2AN. The patient underwent deformity correction with posterior instrumented fusion from T5 to L2 with thoracoplasty of the right 8th to 10th rib. In conclusion, we report on two siblings with AIS who underwent surgical treatment for different types of curves. They showed favorable outcomes after performing deformity correction with posterior instrumented fusion. Our rare case supports the underlying basis of genetic heterogeneity as a complex polygenic model.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11309601/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141903146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Periprosthetic Femoral Fractures-Beyond B2.","authors":"Chika Edward Uzoigwe, Arun Thor Watts, Praise Briggs, Tom Symes","doi":"10.5435/JAAOSGlobal-D-23-00135","DOIUrl":"10.5435/JAAOSGlobal-D-23-00135","url":null,"abstract":"<p><p>The proliferation of hip arthroplasty has seen concomitant increases in periprosthetic femoral fractures (PFFs). The most common pattern involves fracture at the level of a loose prosthesis (B2). B2 PFFs have a unique mechanopathogenesis linked to the tendency of polished taper-slip cemented stems to subside in the cement. Such stems carry a much higher PFF risk than other cemented designs. Mega-data, consistent across national registries, suggest that increasing application of the taper-slip principle has resulted in the emergence of highly polished, very low friction cemented prostheses. These have the propensity to migrate within the cement, increasing B2 PFF risk. This would explain the strong association between cobalt-chromium stems and PFF. Is PFF the mode of failure of polished taper-slip stems rather than aseptic loosening? Established wisdom teaches that B2 PFFs should be managed with revision surgery. There is a large body of new evidence that, in certain instances, fixation results in outcomes at least equivalent to revision arthroplasty, with shorter surgical time, decreased transfusion requirements, and lower dislocation risk. This is so in B2 PFFs around cemented polished taper-slip stems with an intact bone-cement interface. We outline advances in understanding of B2 PFF with special reference to mechanopathogenesis and indications for fixation.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11309721/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141903182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elevated Titanium Levels After Revision Total Hip Caused by Previously Unreported Mechanism.","authors":"Brian G Josephson, Timothy A Damron","doi":"10.5435/JAAOSGlobal-D-24-00001","DOIUrl":"10.5435/JAAOSGlobal-D-24-00001","url":null,"abstract":"<p><strong>Introduction: </strong>Metallosis from total hip arthroplasty is usually due to trunnionosis and is associated with elevated serum cobalt and chromium levels. Titanium levels usually remain normal.</p><p><strong>Methods: </strong>Here, we report two rare cases of elevated titanium levels, both with the same mechanism, which is a previously unreported cause of titanium metallosis.</p><p><strong>Results: </strong>In these cases, contact between cables and the titanium stem were the source.</p><p><strong>Discussion: </strong>Reports of isolated high titanium levels associated with total hip arthroplasty are rare. These cases illustrate a new mechanism from which this situation may arise.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11309661/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141903147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predictors of Patient-Reported Outcomes After Hyaluronic Acid Injections: Effect of Expectations and Psychological Stress.","authors":"Anya Hall, Donghoon Lee, Richard Campbell, Ryan Paul, Morgan Leider, Brandon Smith, Kevin Freedman, Fotios Tjoumakaris","doi":"10.5435/JAAOSGlobal-D-23-00152","DOIUrl":"10.5435/JAAOSGlobal-D-23-00152","url":null,"abstract":"<p><strong>Introduction: </strong>Hyaluronic acid (HA) injections are a common nonsurgical treatment of knee osteoarthritis (OA). Patient expectations and psychological stress are believed to affect outcomes after orthopaedic procedures.</p><p><strong>Methods: </strong>This was a prospective cohort study seeking to identify factors predictive of greater patient-reported outcomes after HA injections, particularly expectations and psychological stress. 250 patients receiving a series of HA injections for knee OA were enrolled, with 196 being included for analysis. Demographics, surgical history, and preoperative Kellgren-Lawrence severity scores were collected, and patients completed the Knee Osteoarthritis Outcome Score (KOOS) questionnaire, a modified KOOS questionnaire assessing their 6-month postinjection expectations, and the Perceived Stress Scale before the first injection. Outcomes were assessed at 3 weeks and 3 and 6 months after the final injection.</p><p><strong>Results: </strong>KOOS scores improved from preinjection to 6-month follow-up but did not meet patients' expectations or minimal clinically important difference. Expectations correlated with 6-month KOOS pain, activities of daily living, sport, and quality of life subscales (ρ = 0.19 to 0.34), but not the symptom subscale (P = 0.10). Expectations (ρ = 0.31 to 0.37), younger age (ρ = -0.17 to -0.18), and greater perceived stress (ρ = 0.23) correlated with greater improvement from baseline KOOSs. Lower body mass index (ρ = -0.19 to -0.22), male sex (ρ = -0.17), and greater preinjection function (ρ = 0.37 to 0.46) correlated with greater 6-month outcomes. Stress measured on the Perceived Stress Scale did not correlate with 6-month KOOSs (P ≥ 0.27). Lower Kellgren-Lawrence severity score was weakly associated with greater 6-month KOOS activities of daily living and sport scores (ρ = -0.15 to -0.16) and greater improvement in the KOOS symptom score (ρ = -0.15).</p><p><strong>Discussion: </strong>This study identified that higher expectations, lower body mass index, younger age, male sex, lower radiographic severity, greater preinjection function, and greater perceived stress are associated with greater patient outcomes after HA injection. Physicians should consider these factors when counseling patients with knee OA about viscosupplementation.</p><p><strong>Study type: </strong>Prospective Cohort Study (Level of Evidence II).</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11302948/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141898613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial Intelligence Machine Learning Algorithms Versus Standard Linear Demographic Analysis in Predicting Implant Size of Anatomic and Reverse Total Shoulder Arthroplasty.","authors":"Amir Boubekri, Michael Murphy, Michael Scheidt, Krishin Shivdasani, Joshua Anderson, Nickolas Garbis, Dane Salazar","doi":"10.5435/JAAOSGlobal-D-24-00182","DOIUrl":"10.5435/JAAOSGlobal-D-24-00182","url":null,"abstract":"<p><strong>Background: </strong>Accurate and precise templating is paramount for anatomic total shoulder arthroplasty (TSA) and reverse total shoulder arthroplasty (RSA) to enhance preoperative planning, streamline surgery, and improve implant positioning. We aimed to evaluate the predictive potential of readily available patient demographic data in TSA and RSA implant sizing, independent of implant design.</p><p><strong>Methods: </strong>A total of 578 consecutive, primary, noncemented shoulder arthroplasty cases were retrospectively reviewed. Demographic variables and implant characteristics were recorded. Multivariate linear regressions were conducted to predict implant sizes using patient demographic variables.</p><p><strong>Results: </strong>Linear models accurately predict TSA implant sizes within 2 millimeters of humerus stem sizes 75.3% of the time, head diameter 82.1%, head height 82.1%, and RSA glenosphere diameter 77.6% of the time. Linear models predict glenoid implant sizes accurately 68.2% and polyethylene thickness 76.6% of the time and within one size 100% and 95.7% of the time, respectively.</p><p><strong>Conclusion: </strong>Linear models accurately predict shoulder arthroplasty implant sizes from demographic data. No significant statistical differences were observed between linear models and machine learning algorithms, although the analysis was underpowered. Future sufficiently powered studies are required for more robust assessment of machine learning models in predicting primary shoulder arthroplasty implant sizes based on patient demographics.</p>","PeriodicalId":45062,"journal":{"name":"Journal of the American Academy of Orthopaedic Surgeons Global Research and Reviews","volume":"8 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11302942/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141898612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}