PDF(Pubmed)
Abstract：
UNASSIGNED: Prosthetic instability is one of the most common short-term complications following reverse total shoulder arthroplasty (RTSA). Numerous strategies exist to attempt to mitigate this complication, including utilization of constrained polyethylene humeral liners. A concern of constrained humeral liners is that they may come at the expense of restricted rotational range of motion (ROM). The purpose of the present study is to compare range of ROM and patient-reported outcomes (PROs), and satisfaction among matched cohorts using constrained vs. unconstrained liners after RTSA.
UNASSIGNED: A multicenter shoulder arthroplasty registry was retrospectively reviewed to identify patients with two-year clinical follow-up after RTSA with constrained liners used at the surgeon\'s discretion. All patients had the same inlay humeral prosthesis with a 135° neck shaft angle. This study cohort was matched 1:2 to control patients who underwent RTSA with standard liners based on age, sex, total glenoid-sided lateralization, glenosphere diameter, and surgery performed on the dominant arm. Improvement in PROs and ROM was compared between groups.
UNASSIGNED: Twenty-two patients were identified who underwent RTSA with a constrained humeral liner; these were compared to 44 matched patients with standard liners. The groups were found to have no notable differences in demographics, baseline PROs and ROM. At two years postoperatively, both cohorts demonstrated improvements in all PROs without statistically significant differences between the two groups. There were no differences between groups in improvement in any ROM measure, including forward flexion (constrained: 54°, standard: 57°, P = .771), external rotation at the side (constrained: 42°, standard: 41°, P = .906) or internal rotation at 90° of abduction (constrained: 24°, standard: 20°, P = .587).
UNASSIGNED: For an inlay humeral prosthesis with a 135° neck shaft angle, utilization of a constrained liner for RTSA demonstrates no significant difference in ROM or PROs compared to a well-matched cohort of patients who underwent RTSA with a standard polyethylene humeral liner. These are reassuring data for using constrained liners when there is intraoperative concern for prosthetic instability.
UNASSIGNED: A multicenter shoulder arthroplasty registry was retrospectively reviewed to identify patients with two-year clinical follow-up after RTSA with constrained liners used at the surgeon\'s discretion. All patients had the same inlay humeral prosthesis with a 135° neck shaft angle. This study cohort was matched 1:2 to control patients who underwent RTSA with standard liners based on age, sex, total glenoid-sided lateralization, glenosphere diameter, and surgery performed on the dominant arm. Improvement in PROs and ROM was compared between groups.
UNASSIGNED: Twenty-two patients were identified who underwent RTSA with a constrained humeral liner; these were compared to 44 matched patients with standard liners. The groups were found to have no notable differences in demographics, baseline PROs and ROM. At two years postoperatively, both cohorts demonstrated improvements in all PROs without statistically significant differences between the two groups. There were no differences between groups in improvement in any ROM measure, including forward flexion (constrained: 54°, standard: 57°, P = .771), external rotation at the side (constrained: 42°, standard: 41°, P = .906) or internal rotation at 90° of abduction (constrained: 24°, standard: 20°, P = .587).
UNASSIGNED: For an inlay humeral prosthesis with a 135° neck shaft angle, utilization of a constrained liner for RTSA demonstrates no significant difference in ROM or PROs compared to a well-matched cohort of patients who underwent RTSA with a standard polyethylene humeral liner. These are reassuring data for using constrained liners when there is intraoperative concern for prosthetic instability.
摘要：
未经证实：假体不稳定是反向全肩关节置换术（RTSA）后最常见的短期并发症之一。存在许多策略来试图减轻这种复杂性，包括约束聚乙烯肱骨衬垫的利用。受约束的肱骨衬垫的一个问题是它们可能以受限的旋转运动范围(ROM)为代价。本研究的目的是比较ROM和患者报告结果（PRO）的范围，和匹配队列之间的满意度使用约束与RTSA后的无约束衬板。
UNASSIGNED：回顾性审查了一项多中心肩关节置换术登记，以确定在外科医师自行决定使用限制性衬垫的RTSA术后进行两年临床随访的患者。所有患者均使用相同的肱骨假体，颈轴角为135°。根据年龄，本研究队列与接受标准衬垫RTSA的对照患者1：2匹配，性别,关节盂侧总侧化，卵球直径，和在优势臂上进行的手术。比较两组间PRO和ROM的改善情况。
UNASSIGNED：确定了22例患者接受了限制性肱骨衬垫的RTSA；将这些患者与44例匹配的使用标准衬垫的患者进行比较。发现这些群体在人口统计学上没有显着差异，基线PRO和ROM。术后两年，两个队列均显示所有PRO均有改善,两组间无统计学显著性差异.在任何ROM测量的改善方面，组间没有差异，包括前屈(约束:54°,标准:57°,P=.771），侧面的外部旋转(约束:42°,标准:41°,P=.906）或外展90°内旋（约束：24°，标准:20°,P=.587）。
UNASSIGNED：对于颈轴角为135°的嵌体肱骨假体，与使用标准聚乙烯肱骨衬垫进行RTSA的匹配良好的患者队列相比,使用受限衬垫进行RTSA的ROM或PRO没有显著差异.当术中担心假体不稳定时，这些数据用于使用受约束的衬里。
UNASSIGNED：回顾性审查了一项多中心肩关节置换术登记，以确定在外科医师自行决定使用限制性衬垫的RTSA术后进行两年临床随访的患者。所有患者均使用相同的肱骨假体，颈轴角为135°。根据年龄，本研究队列与接受标准衬垫RTSA的对照患者1：2匹配，性别,关节盂侧总侧化，卵球直径，和在优势臂上进行的手术。比较两组间PRO和ROM的改善情况。
UNASSIGNED：确定了22例患者接受了限制性肱骨衬垫的RTSA；将这些患者与44例匹配的使用标准衬垫的患者进行比较。发现这些群体在人口统计学上没有显着差异，基线PRO和ROM。术后两年，两个队列均显示所有PRO均有改善,两组间无统计学显著性差异.在任何ROM测量的改善方面，组间没有差异，包括前屈(约束:54°,标准:57°,P=.771），侧面的外部旋转(约束:42°,标准:41°,P=.906）或外展90°内旋（约束：24°，标准:20°,P=.587）。
UNASSIGNED：对于颈轴角为135°的嵌体肱骨假体，与使用标准聚乙烯肱骨衬垫进行RTSA的匹配良好的患者队列相比,使用受限衬垫进行RTSA的ROM或PRO没有显著差异.当术中担心假体不稳定时，这些数据用于使用受约束的衬里。
