We compared the strength of screw vs suture button fixation in the Latarjet procedure for shoulder dislocation through biomechanical testing in a cadaver model. Cadavers were assigned randomly to receive screw or suture button fixation (both groups, n=5). The anteroposterior radius of the glenoid was measured, and a bony defect was created on the anteroinferior rim of the glenoid, equal to 25% of the width of the anteroposterior radius of the glenoid surface. The coracoid process was transferred into the newly created bony defect of the glenoid and fixed with two 3.5-mm partially threaded cannulated screws or 2 surgical buttons. All samples underwent tensile testing in the anteroinferior direction. Statistical analysis was performed to compare mean forces at failure between groups (alpha=.05). The mean force at failure was higher in the screw group (295 N; range, 103–534 N) than in the suture button group (133 N; range, 74–270 N) (P=.045). We found no difference between groups in ability to withstand a force of 150 N, which is the reported mean daily force threshold borne by the shoulder (P=.52). Screw fixation withstood a higher failure load than suture button fixation, indicating that screw fixation is a biomechanically superior option in the Latarjet procedure. The fixation methods did not differ in their ability to withstand the mean force borne by the shoulder during activities of daily living; thus, suture button fixation should be considered as an option in the Latarjet procedure. [Orthopedics. 20XX;XX(X):xx–xx.]

我们通过在尸体模型中进行生物力学测试，比较了肩关节脱位的 Latarjet 手术中螺钉固定与缝合纽扣固定的强度。尸体被随机分配接受螺钉或缝合纽扣固定（两组，n=5）。测量关节盂的前后半径，在关节盂的前下缘形成骨缺损，等于关节盂表面前后半径宽度的25%。将喙突转移到新产生的关节盂骨缺损处，并用两个 3.5 毫米部分螺纹空心螺钉或 2 个手术按钮固定。所有样品都进行了前下方方向的拉伸测试。进行统计分析以比较组间失败时的平均力量 (alpha=.05)。P =.045）。我们发现各组之间承受 150 N 力的能力没有差异，这是报告的肩部承受的平均每日力阈值 ( P =.52)。螺钉固定比缝合纽扣固定承受更高的失效载荷，表明螺钉固定是 Latarjet 手术中生物力学优越的选择。固定方法在日常生活活动中承受肩部承受的平均力的能力没有差异；因此，缝合按钮固定应被视为 Latarjet 程序中的一个选项。[骨科。20XX;XX(X):xx–xx.]