Hu Qingxiang, Zhou Zhekun, Sun Benben, Zhang Guangcheng, Zhu Qi, Zhang Xiaofeng, Wu Di, He Yaohua
Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Department of Orthopedics, Jinshan District Central Hospital affiliated to Shanghai University of Medicine & Health Sciences, Shanghai, China.
Orthop J Sports Med. 2024 Apr 30;12(4):23259671241238216. doi: 10.1177/23259671241238216. eCollection 2024 Apr.
The stability ratio (SR) is used to assess the stability of the glenoid in anterior shoulder instability (ASI). However, the association between the SR and postoperative clinical function and instability recurrence after arthroscopic Bankart repair is unknown.
Patients with a higher SR would have better postoperative clinical scores and a lower incidence of recurrent instability than patients with a lower SR after arthroscopic Bankart repair.
Cohort study; Level of evidence, 3.
A total of 62 patients who underwent arthroscopic Bankart repair for ASI between 2013 and 2019 were enrolled. All patients had at least 2 years of follow-up data. The preoperative SR was calculated via biomechanical testing based on patient-specific 3-dimensional glenoid models, and patients were evenly divided into 2 groups: high SR (≥16.13%) and low SR (<16.13%). Baseline information (patient characteristics, clinical history, bone defect area [BDA], and SR), clinical scores at the final follow-up (Single Assessment Numerical Evaluation, Western Ontario Shoulder Index, and American Shoulder and Elbow Surgeons), and instability recurrence were compared between the 2 groups.
No significant differences were found in the baseline information between the high- and low-SR groups, except for the BDA (8.5% [high-SR group] vs 11.9% [low-SR group]; = .01). No patients in the high-SR group had recurrent instability, while 6 patients (19.4%) had recurrent instability in the low-SR group ( = .02). Patients in the high-SR group had superior clinical outcomes compared with those in the low-SR group in terms of postoperative Western Ontario Shoulder Index scores (median, 205 vs 410, respectively; = .006) and American Shoulder and Elbow Surgeons scores (median, 98.3 vs 95, respectively; = .02).
In the present study, the SR was significantly associated with postoperative clinical function and recurrence of instability after arthroscopic Bankart repair in patients with ASI.
稳定性比率（SR）用于评估前肩不稳（ASI）患者的关节盂稳定性。然而，关节镜下Bankart修复术后SR与临床功能及不稳复发之间的关联尚不清楚。
关节镜下Bankart修复术后，SR较高的患者比SR较低的患者具有更好的术后临床评分和更低的不稳复发率。
队列研究；证据等级，3级。
纳入2013年至2019年间因ASI接受关节镜下Bankart修复的62例患者。所有患者均有至少2年的随访数据。术前SR通过基于患者特异性三维关节盂模型的生物力学测试计算得出，患者被均匀分为两组：高SR组（≥16.13%）和低SR组（<16.13%）。比较两组的基线信息（患者特征、临床病史、骨缺损面积[BDA]和SR）、末次随访时的临床评分（单项评估数值评定、西 Ontario 肩指数和美国肩肘外科医师学会评分）以及不稳复发情况。
高SR组和低SR组的基线信息除BDA外无显著差异（8.5%[高SR组]对11.9%[低SR组]；P = 0.01）。高SR组无患者出现不稳复发，而低SR组有6例患者（19.4%）出现不稳复发（P = 0.02）。高SR组患者术后西 Ontario 肩指数评分（中位数分别为205和410；P = 0.006）和美国肩肘外科医师学会评分（中位数分别为98.3和95；P = 0.02）方面的临床结局优于低SR组。
在本研究中，SR与ASI患者关节镜下Bankart修复术后的临床功能及不稳复发显著相关。
