BACKGROUND Reverse shoulder arthroplasty (RSA) is a common treatment for proximal humeral fractures. (PHF) in the elderly. This study evaluates the functional outcome and the influence of. tuberosity healing (TH) following RSA with 135° humeral inclination and a neutral glenosphere without lateralization for PHFs. METHODS In this retrospective case series, all patients with an acute PHF treated with primary RSA with 135° humeral inclination and a standard glenosphere without lateralization during a four-year period were followed up. Constant score (CS), patient satisfaction (subjective shoulder value (SSV)), TH and glenoid notching were analyzed. RESULTS 38 patients with a mean age of 77 ± 8 years were available for follow-up at 34 ± 5 months. The mean adjusted CS was 61 ± 9 points. TH of the greater tuberosity (GT) was 82% and resulted in significantly improved abduction (117° vs. 81°; P < 0.001), forward flexion (139° vs. 99°; p < 0.001), external rotation (28° vs. 10°; p = 0.002), CS (65 vs. 41 points; p < 0.001) and patient satisfaction (SSV 79% vs. 48%; p < 0.001). TH of the LT was 87% without affecting internal rotation or overall outcome. The complication- and revision rate was 5%; implant survival was 100%. Scapular notching occurred in 3 (8%) cases (all grade 1). CONCLUSION RSA with 135° humeral inclination and a standard glenosphere for PHF leads to good functional outcome in combination with a high rate of TH and a low rate of scapular notching. The short-term revision rate is low and the results are predictable and continuous. TH is associated with improved ROM, patient satisfaction and functional outcome.

中文翻译：

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对于具有135°假体的肱骨近端骨折，初次反向肩关节置换术后，高结节愈合率与更好的功能预后相关。

背景技术肩关节置换术（RSA）是肱骨近端骨折的常见治疗方法。（PHF）中老年人。这项研究评估了功能结局及其影响。RSA肱骨倾斜度为135°且中性角膜球体无结节性PHF导致结节愈合（TH）。方法在此回顾性病例系列中，对所有在四年期间接受过急性PHF的患者进行了初步治疗，这些患者均接受了135°肱骨倾斜度和标准球囊无侧斜的原发性RSA治疗。分析了恒定评分（CS），患者满意度（主观肩膀值（SSV）），TH和关节盂切迹。结果38例平均年龄为77±8岁的患者可在34±5个月时接受随访。调整后的平均CS为61±9点。大结节（GT）的TH为82％，导致外展明显改善（117°vs. 81°； P <0.001），前屈（139°vs. 99°； p <0.001），外旋（28° vs. 10°； p = 0.002），CS（65 vs. 41分； p <0.001）和患者满意度（SSV 79％vs. 48％； p <0.001）。LT的TH为87％，不影响内部轮换或总体结局。并发症和翻修率为5％；植入物存活率为100％。肩cap骨切口发生3例（8％）（所有1级）。结论肱骨倾斜度为135°且PPH的标准盂球的RSA结合高TH率和低肩not骨切口率可导致良好的功能预后。短期修订率很低，结果是可预测且连续的。TH与改进的ROM相关联，