ArticleJournal of orthopaedic surgery and research2026
Lower average cortical bone thickness predicts cemented fixation in short-stem reverse shoulder arthroplasty.
Article in Journal of orthopaedic surgery and research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeThis study aimed to identify radiographic and demographic predictors influencing the intraoperative decision for cemented versus cementless humeral fixation in patients ≤ 80 years undergoing short-stem reverse shoulder arthroplasty (RSA).
methodsA retrospective analysis was conducted on RSA cases between 02/2019 and 10/2024. Patients ≤ 80 years were stratified into Group A (cementless fixation; n = 209) or Group B (cemented fixation; n = 58) based on intraoperative assessment of trial stem stability and bone quality. Preoperative variables included age, sex, body mass index (BMI), American Society of Anesthesiologists score (ASA), diagnosis, and radiographic parameters such as cortical bone thickness gauge (CBTg), average cortical thickness (CBTavg), acromiohumeral distance (AHD), and Hamada and Walch classifications. Multivariate logistic regression including age, sex, CBTavg, CBTg, and diagnosis was performed to identify independent predictors of cemented fixation.
resultsPatients in the cemented group were significantly older (74.0 ± 4.2 vs. 70.0 ± 6.1 years; p < 0.05) and more often female (81% vs. 61%; p < 0.05). Cortical bone measurements were significantly lower in the cemented group (CBTg: 0.25 ± 0.06 vs. 0.27 ± 0.06; CBTavg: 5.15 mm ± 1.23 mm vs. 6.42 mm ± 1.43 mm; both p < 0.05). Multivariate analysis identified increasing age (OR: 1.1; p < 0.05), female sex (OR: 2.8; p < 0.05), and reduced CBTavg (OR: 0.6; p < 0.05) as independent predictors of cemented fixation. Other variables such as BMI, ASA score, AHD, and CBTg did not show significant associations with fixation type.
conclusionAmong all evaluated factors, lower CBTavg was the strongest independent predictor for the use of cemented humeral fixation in short-stem RSA. Its integration into preoperative planning may assist surgical decision-making and improve consistency in fixation strategy. STUDY
designLevel IV; retrospective case series.
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