Seminars in Arthroplasty最新文献

{"title":"Impact of surgeon variability on outcomes after total shoulder arthroplasty: an analysis of 2188 surgeons","authors":"Favian Su MD,&nbsp;Cameron Nosrat BS,&nbsp;Ryan T. Halvorson MD,&nbsp;Drew A. Lansdown MD,&nbsp;Brian T. Feeley MD,&nbsp;C. Benjamin Ma MD,&nbsp;Alan L. Zhang MD","doi":"10.1053/j.sart.2024.05.003","DOIUrl":"10.1053/j.sart.2024.05.003","url":null,"abstract":"<div><h3>Background</h3><p>There has been limited evaluation of surgeon-specific factors on outcomes after total shoulder arthroplasty (TSA). The goals of this study were (1) to determine the impact of surgeon procedural volume, career duration, practice type, and fellowship training on TSA outcomes at 2-year follow-up and (2) to evaluate the relative importance of surgeon variables in relation to patient variables in influencing outcomes.</p></div><div><h3>Methods</h3><p><span>The PearlDiver Mariner database was queried to identify all surgeons who performed a minimum of 11 TSA procedures from 2010 to 2018. An Internet search of publicly available data was performed to determine the career duration, practice type, and fellowship training of each surgeon. Multivariate logistic regression<span> models were built to determine the relationship between surgeon-specific variables and 2-year surgical complications and revisions and 90-day readmissions. Variable importance of patient-specific and surgeon-specific factors was determined by the </span></span>Akaike information criterion increase of these models.</p></div><div><h3>Results</h3><p>A total of 2188 surgeons who performed 93,122 TSA procedures were identified in this database. Higher reverse TSA surgical volume was associated with fewer surgical complications and revisions, although such a relationship was not observed for anatomic TSA. Revision after anatomic TSA was more common among surgeons who were in their first 5 years of practice. There was a higher risk of surgical complication and readmission among academic surgeons, but this did not equate with a higher risk of revision. The impact of these surgeon-specific factors on outcomes was small in relation to patient-level variables, such as age, sex, and number of medical comorbidities.</p></div><div><h3>Conclusion</h3><p>Surgeon procedural volume, career duration, and practice setting influence the surgical complication, revision, and readmission rates after TSA. The impact of surgeon factors was small relative to patient variables, highlighting the importance of patient selection in mitigating adverse outcomes.</p></div>","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 789-796"},"PeriodicalIF":0.0,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of glenosphere diameter and lateralization in primary reverse shoulder arthroplasty: a randomized clinical trial","authors":"Erick M. Marigi MD ,&nbsp;Ronda N. Esper BSc ,&nbsp;Dirk R. Larson MS ,&nbsp;Mark E. Morrey MD ,&nbsp;Joaquin Sanchez-Sotelo MD, PhD","doi":"10.1053/j.sart.2024.04.008","DOIUrl":"10.1053/j.sart.2024.04.008","url":null,"abstract":"<div><h3>Background</h3><p><span>Within reverse total shoulder arthroplasty (RSA), prior studies have suggested that smaller glenosphere diameters may result in higher rates of scapular notching and polyethylene wear, while lateralized glenospheres may allow for better range of motion (ROM); however, supportive data remains limited. Therefore, the purpose of this study was to report the outcomes of a prospective </span>randomized clinical trial comparing 4 different glenosphere configurations based on diameter and lateral offset.</p></div><div><h3>Methods</h3><p><span><span>Between 2016 and 2020, 113 primary RSAs with a diagnosis of either rotator cuff tear arthropathy<span> (n = 48, 42%), irreparable rotator cuff tears (n = 22, 19%), or primary glenohumeral </span></span>osteoarthritis<span> with subluxation<span> or glenoid bone loss (n = 43, 38%) were enrolled into a blinded prospective randomized clinical trial. The mean age of the patients included in the study was 73 ± 7 (range, 50-89) years, and 58 (51.3%) were males. All procedures were performed by two surgeons utilizing the ReUnion RSA system (Stryker, Mahwah, NJ, USA). Patients were randomized into four possible groups based on the diameter and lateral offset of the glenosphere implanted: 36 mm diameter with 2 mm (n = 34, 30.1%) or 6 mm (n = 28, 24.8%) of lateralization and 40 mm diameter with 2 mm (n = 29, 25.7%) or 6 mm (n = 22, 19.5%) of lateralization. Outcomes collected included pain, active ROM, strength, satisfaction, patient-reported outcome measures (PROMs), complications, </span></span></span>reoperations<span>, and revisions. PROMs included the Oxford Shoulder Score, the American Shoulder and Elbow Surgeons, and the quick Disabilities of the Arm, Shoulder and Hand questionnaire. All patients were followed for a minimum of 2 years.</span></p></div><div><h3>Results</h3><p>With the numbers available, glenosphere diameter and lateralization resulted in no differences in pain, ROM, strength, satisfaction, and PROMs at 1 year, 2 years, or final follow-up (All <em>P</em> &gt; .05). However, all 3 complications (10.7% vs. 0% vs. 0% vs. 0%; <em>P</em> = .025) and 2 revision surgeries (7.1% vs. 0% vs. 0% vs. 0%; <em>P</em> = .103) occurred in males, with the 36 + 6 cohort.</p></div><div><h3>Conclusions</h3><p>Using this particular RSA design, implantation of glenospheres with 36 mm or 40 mm of diameter and 2 mm or 6 mm of sphere lateralization did not translate into significant differences when primary RSA was performed in shoulders with rotator cuff tear arthropathy, irreparable cuff tears, or primary glenohumeral osteoarthritis. However, all observed complications occurred in males with the smallest diameter and lateralized glenosphere.</p></div>","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 746-754"},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stemless RSA shows good short-term radiological stability and clinical outcomes in elderly patients","authors":"Maxime Antoni MD ,&nbsp;Pierre Alban Bouche MD, PhD ,&nbsp;Laurent Obert MD, PhD ,&nbsp;Alexandre Quemener MD ,&nbsp;Geoffroy Nourissat MD, PhD","doi":"10.1053/j.sart.2024.04.010","DOIUrl":"10.1053/j.sart.2024.04.010","url":null,"abstract":"<div><h3>Background</h3><p>The main goal of this study was to investigate the influence of patient age on humeral implant fixation in stemless reverse shoulder arthroplasty (RSA). The secondary goals were to investigate the influence on the occurrence of complications and on clinical outcomes.</p></div><div><h3>Methods</h3><p><span>We performed a retrospective multicenter study, including a series of patients operated on for stemless RSA. All patients were reviewed at a minimum of 2 years, with clinical and radiographic evaluation. The primary endpoint was the occurrence of migration of the humeral implant at the final follow-up. Secondary endpoints were clinical scores, occurrence of postoperative complications, need for revision surgery, and radiographic changes. Each patient ≥70 year old was matched on gender and </span>body mass index,with a patient &lt; 70 year old on a 1:1 basis.</p></div><div><h3>Results</h3><p>Forty-five patients aged ≥70 years were included and matched, with 45 patients aged &lt;70 years, giving a total of 90 patients (54.4% men) with the mean age being 68.5 ± 7.9 years. There was no difference between the 2 groups in terms of surgical modalities. There was no correlation between age and clinical outcomes. Three migrations of the humeral implant occurred, none leading to a revision, without any influence of age (<em>P</em> = 1.0). We found no correlation between patient age and the occurrence of a postoperative complication (<em>P</em><span> = 1.0), reoperation (</span><em>P</em> = 1.0) or any of the other radiographic parameters assessed.</p></div><div><h3>Conclusion</h3><p>This study reported the stability of stemless RSA implants in elderly patients. Clinical outcomes, complication, and revision rates were not affected by age either.</p></div>","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 762-769"},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bilateral aseptic loosening of glenoid and humeral components after anatomic shoulder arthroplasty: a case report","authors":"Nathan Sherman MD, MBA ,&nbsp;Robert V. Childers MS ,&nbsp;Bryn Nisbet MD ,&nbsp;Andrew Knox PA ,&nbsp;Andrew Mahoney MD","doi":"10.1053/j.sart.2024.04.009","DOIUrl":"10.1053/j.sart.2024.04.009","url":null,"abstract":"","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 755-761"},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In vitro analysis of various antibiotic and cement combinations against S. epidermidis and S. lugdunensis for treatment of periprosthetic shoulder infection","authors":"","doi":"10.1053/j.sart.2024.04.007","DOIUrl":"10.1053/j.sart.2024.04.007","url":null,"abstract":"<div><h3>Background</h3><p><span><span><span>Periprosthetic joint infections (PJIs) are devastating potential complications after </span>arthroplasty<span> surgery with significant therapeutic challenges. Many authors advocate for two-stage revision arthroplasty<span> for PJI of the shoulder which includes explanation with antibiotic spacer placement. The optimal antibiotic/cement combination for PJI in the shoulder is not known. The purpose of this study is to analyze various cement and antibiotic concentrations against </span></span></span>Coagulase negative staphylococcus species, </span><span><span>S. epidermidis</span></span> and <em>S. lugdunensis</em>.</p></div><div><h3>Methods</h3><p><span>Five strains of coagulase negative </span><em>Staph</em><span> were taken from clinically documented orthopedic infections<span><span><span> Both Simplex and Palacos cement were used to create antibiotic laden beads and mixed with either </span>ertapenem, </span>vancomycin<span>, gentamicin<span>, or a combination of ertapenem<span> + vancomycin<span> or ertapenem + gentamicin. The bacteria were plated on lysogeny broth agar plates and 3 beads were added per plate. Samples were analyzed for zone of inhibition at 24 hours, 72 hours, and 1 week. After 1 week, beads were transferred to new plates with bacteria and the process was repeated for 6 weeks.</span></span></span></span></span></span></p></div><div><h3>Results</h3><p>Results showed that ertapenem beads with both Simplex and Palacos cement showed the largest zones of inhibition for all samples. Vancomycin in Palacos cement and vancomycin in combination with ertapenem in Simplex and Palacos cement showed consistent zones of inhibition for the duration of the experiments. Ertapenem in combination with either vancomycin or gentamicin may allow for a powerful initial burst of killing followed by consistent antibiotic elution as opposed to gentamicin alone.</p></div><div><h3>Conclusion</h3><p>While many premade spacers on the market are infused with gentamicin, our in vitro models demonstrate more efficacious bacterial eradication for antibiotics such as ertapenem and vancomycin specifically for certain low virulence organisms that are commonly found in PJI around the shoulder.</p></div>","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 738-745"},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141141749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Update from the Editors-in-Chief","authors":"J. Michael Wiater MD,&nbsp;Theodore A. Blaine MD","doi":"10.1053/j.sart.2023.09.002","DOIUrl":"https://doi.org/10.1053/j.sart.2023.09.002","url":null,"abstract":"","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 2","pages":"Page 275"},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141072709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of social deprivation on hospital utilization following shoulder arthroplasty","authors":"","doi":"10.1053/j.sart.2024.04.005","DOIUrl":"10.1053/j.sart.2024.04.005","url":null,"abstract":"<div><h3>Background</h3><p><span>Disparities in social determinants of health have been linked to worse patient-reported outcomes and higher rates of hospital readmission following </span>shoulder arthroplasty<span>. Identification of perioperative predictors of increased healthcare utilization is of particular interest to surgeons to improve outcomes and mitigate the total cost of care. The effect of social deprivation on healthcare utilization has not been fully characterized in the context of shoulder arthroplasty.</span></p></div><div><h3>Methods</h3><p>A retrospective review was performed from of a single institution’s experience with primary shoulder arthroplasty between 2012 and 2020. Demographic variables (age, race, and legal sex) and healthcare utilization (hospital readmission, emergency department<span> (ED) visits, follow-up visits, and telephone calls) were recorded within 90 days of surgery. The Area Deprivation Index was recorded, and patients were separated into terciles according to their relative level of social deprivation. Outcomes were then stratified based on Area Deprivation Index tercile and compared.</span></p></div><div><h3>Results</h3><p>A total of 780 patients were included. The least, intermediate, and most deprived groups consisted of 195, 371, and 214 patients, respectively. The level of social deprivation was not a predictor of increased healthcare utilization through readmission, the ED, or the outpatient clinic. Identifying as Black or African American was an independent predictor of readmission and ED visitation. Female sex was an independent predictor of increased postoperative telephone calls.</p></div><div><h3>Conclusion</h3><p>Patients undergoing shoulder arthroplasty have similar use of hospital resources regardless of their level of social deprivation. We hope these results can be used to guide clinical decision-making, increase transparency, and manage patient outcomes following shoulder arthroplasty surgery.</p></div>","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 724-729"},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141140568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Finite element analysis of acromial fracture after reverse total shoulder arthroplasty","authors":"","doi":"10.1053/j.sart.2024.04.004","DOIUrl":"10.1053/j.sart.2024.04.004","url":null,"abstract":"<div><h3>Background</h3><p>The prevalence of acromial fracture after reverse total shoulder arthroplasty (RSA) is reportedly 2.6%-8.4%, and clinical outcomes differ among fracture sites. However, few studies have investigated the factors affecting fracture sites. This study aimed to reproduce acromial fractures after RSA by replicating the postoperative displacement of the humerus using finite element models (FEMs), and to investigate the effect of humeral displacement on the fracture site.</p></div><div><h3>Methods</h3><p>Six patients (mean age, 76.3 ± 7.9 years; 5 women and 1 man) with acromial fractures after RSA treated at our institution were included. Among them, 3 had Levy Type 1 fractures, whereas the other 3 had Levy Type 2 fractures. Preoperative computed tomography data were used to create a 3-dimensional FEM. All elements within the proximal 2 cm of the clavicle and the scapular body were completely constrained. The entire humerus was forcibly displaced following its displacement after RSA, as measured by preoperative and postoperative computed tomography. The fracture sites, total displacement, external constraint of the humerus at the initial fracture, and bone density from the acromion to the scapular spine were investigated. Values of <em>P</em> &lt; .05 were considered statistically significant in tests of statistical inference but were interpreted as reference values due to the small number of cases.</p></div><div><h3>Results</h3><p>There were no major differences in humeral displacement between Type 1 and Type 2 fractures. Although the fracture sites in the FEM were slightly more medial than the actual fracture sites, they were similar. The total displacement and external constraint of the humerus at the initial fracture were similar in Type 1 and Type 2 fractures. The distribution of bone density from the acromion to the scapular spine differed between fracture types.</p></div><div><h3>Conclusion</h3><p>We were able to reproduce acromial fractures after RSA by replicating humeral displacement using FEM. The extent and direction of humeral displacement may not significantly affect the acromial fracture site, whereas the bone density distribution from the acromion to the scapular spine may affect it.</p></div>","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 716-723"},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1045452724000610/pdfft?md5=07cc68718199a6637ff08597ebc308b6&pid=1-s2.0-S1045452724000610-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141133901","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":"The role of smoking status on survivorship and clinical outcomes following total shoulder arthroplasty","authors":"","doi":"10.1053/j.sart.2024.04.006","DOIUrl":"10.1053/j.sart.2024.04.006","url":null,"abstract":"<div><h3>Background</h3><p>Smoking has been strongly associated with poor healing and worse outcomes following various joint arthroplasties, including worse functional measurements and increased complication rates. While smoking is associated with adverse events and complications in shoulder arthroplasty, the role of smoking in functional measurements and patient-reported outcomes (PROs) remains to be fully characterized.</p></div><div><h3>Methods</h3><p>Institutional electronic medical records were used to study patients who underwent primary anatomic total shoulder arthroplasty (aTSA) and reverse TSA (rTSA) between 2009 and 2020 with at least 2 years of follow-up. Patients were called to obtain PROs. Patients were stratified into 3 cohorts, by tobacco smoking status: current, former, and never smokers.</p></div><div><h3>Results</h3><p>Among 498 patients who underwent TSA, 280 were aTSAs and 218 were rTSAs. Within aTSAs, 28 patients were classified as current, 99 as former, and 153 as never smokers. In rTSAs, 20 were current, 68 were former, and 130 were never smokers. Current smokers were younger at the time of surgery than former and never smokers in both aTSA (current: 58.8 ± 8.5; former: 63.9 ± 9.2; never: 62.8 ± 9.0 years; <em>P</em> = .031) and rTSA (current: 59.0 ± 6.8; former: 68.5 ± 7.2; never: 69.0 ± 9.0 years; <em>P</em> &lt; .001). Furthermore, current smokers experienced lower 5-year implant survival in aTSA (current: 84.3%; former: 98.8%; never: 95.0%; <em>P</em> = .015) and rTSA (current: 82.4%; former: 94.5%; never: 94.1%; <em>P</em> = .004). No differences were found among the 3 cohorts for preoperative range of motion (ROM) and strength, or postoperative ROM and strength in the aTSA cohort. rTSA preoperative measurements demonstrated no differences in ROM and strength, and only postoperative forward elevation strength and external rotation strength were found to be different. PROs were found to be of similar magnitude for all patients in the aTSA and rTSA groups.</p></div><div><h3>Conclusion</h3><p>The findings of this study indicate that current smokers exhibited a higher likelihood of necessitating TSA at a younger age and had higher implant failure rates. However, functional measurements were only marginally affected by smoking status.</p></div>","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 730-737"},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1045452724000634/pdfft?md5=21fe6fd34d2d4a3762697225064df951&pid=1-s2.0-S1045452724000634-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141134718","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":"Distalization and lateralization shoulder angles: do they have a role in predicting postoperative clinical outcomes?","authors":"","doi":"10.1053/j.sart.2024.04.003","DOIUrl":"10.1053/j.sart.2024.04.003","url":null,"abstract":"<div><h3>Background</h3><p>Lateralization Shoulder Angle (LSA) and Distalization Shoulder Angle (DSA) have been proposed to estimate the appropriateness of reverse shoulder arthroplasty (RSA) positioning. The purpose of this study was to evaluate the predictive value of DSA and LSA over clinical outcomes in a group of patients treated by the same surgeon with the same clinical and radiographic follow-up.</p></div><div><h3>Methods</h3><p><span><span>A retrospective analysis of a consecutive series of RSAs performed between 2017 and 2021 was carried out. Inclusion criteria were primary RSA as a treatment for Cuff Tear Arthropathy<span>, Massive Irreparable rotator cuff tear, </span></span>Osteoarthritis or </span>Rheumatoid arthritis<span>, a true anteroposterior radiograph of the affected shoulder in neutral rotation at final follow-up, a minimum follow-up of 12 months, radiograph used to measure the angles, and clinical evaluation<span> with the same follow-up. Outcome measures were shoulder range of motion (ROM), visual analog scale (VAS) for pain and Constant-Murley score (CS).</span></span></p></div><div><h3>Results</h3><p>A total of 83 patients were included in the study. Patients achieved on average, 130 ± 14.14° of flexion, 97.5 ± 17.67° of abduction, 62.5 ± 3.53° and 72.5 ± 10.60° of external rotation, respectively, at 0° and 90° of abduction, and 5.13° of internal rotation. The mean VAS and CS were, respectively, 2.5 ± 3.5 mm and 69 ± 2.82 points at last follow-up. The mean DSA and LSA were 45 ± 2.72 and 92.99 ± 9.17, respectively. Neither the linear nor the quadratic regression fit for DSA or LSA revealed relevant associations with any of individual ROM measures, except for the quadratic fit correlating LSA and forward flexion (beta = 0.029, <em>P</em> = .027). Linear fit showed a low reverse, but significant, association between DSA and VAS (beta = −0.56, <em>P</em> = .036) and an association of LSA with both CS (beta = −0.344, <em>P</em> = .009) and VAS (beta = 0.091, <em>P</em> = .01). Quadratic models showed higher R squared for all associations, but correlation was significant only between VAS and LSA (beta = 0.006, <em>P</em> = .011)</p></div><div><h3>Conclusion</h3><p>We present the first evaluation of the predictive value of both DSA and LSA in a group of patients treated by the same surgeon with the same clinical and radiographic follow-up. DSA and LSA play only a marginal to no role in the prediction of RSA postoperative ROM and might have a role in predicting VAS and CS.</p></div>","PeriodicalId":39885,"journal":{"name":"Seminars in Arthroplasty","volume":"34 3","pages":"Pages 708-715"},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141139720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}