Abstract：
Periprosthetic fractures, such as acromial and spine fractures, are known complications following implantation of reverse shoulder arthroplasty (RTSA). The entity of greater tuberosity fractures (GTF) has rarely been studied in the literature. The purpose of this study was to analyze the outcome of postoperative greater tuberosity fractures after RTSA compared to a matched control group. The main findings of this study are that a GTF after RTSA is associated with worse clinical outcome scores (mean absolute CS 50 ± 19 (p = 0.032); SSV 63% ± 26 (p = 0.022); mean force 1 kg ± 2 kg (p = 0.044)) compared with the control group (mean absolute CS 62 ± 21; SSV 77% ± 29; mean force 2 kg ± 2 kg). In terms of postoperative range of motion, the fracture group was significantly worse in terms of external rotation (17° ± 19° vs. 30° ± 19° (p = 0.029)). Internal rotation, flexion, as well as abduction of the shoulder appear to be unaffected (internal rotation GTF 4 ± 2, control group 5 ± 3 (p = 0.138); flexion GTF 102° ± 28°, control group 114° ± 27° (p = 0.160); abduction GTF 109° ± 42°, control group 120° ± 39° (p = 0.317)).
摘要：
假体周围骨折,如肩峰和脊柱骨折，是植入反向肩关节成形术（RTSA）后的已知并发症。文献中很少研究大结节骨折（GTF）的实体。这项研究的目的是分析与匹配的对照组相比，RTSA术后较大结节骨折的结果。这项研究的主要发现是，与对照组（平均绝对CS62±21；SSV77％±29；平均力2kg±2kg）相比，RTSA后的GTF与较差的临床结果评分（平均绝对CS50±19（p=0.032）；SSV63％±26（p=0.022）；平均力1kg±2kg（p=0.044））相关。就术后活动范围而言，骨折组在外旋方面明显更差(17°±19°vs.30°±19°(p=0.029))。内部旋转,屈曲，以及肩关节外展似乎不受影响（内旋GTF4±2，对照组5±3（p=0.138）；屈曲GTF102°±28°，对照组114°±27°（p=0.160）；外展GTF109°±42°，对照组120°±39°(p=0.317))。
