Intervention timing of active rehabilitation training after arthroscopic shoulder surgery in patients with frozen shoulder and rotator cuff injuries
Objective To explore the optimal timing to start active shoulder rehabilitation training in pa-tients with frozen shoulder and rotator cuff injuries (RCI) after surgery.Methods A retrospective analysis was conducted on 90 patients with frozen shoulder combined with RCI admitted to the orthopedic department of Beijing Boai Hospital,China Rehabilitation Research Center from Jan.2019 to Jan.2022,including 46 females and 44 males,with an average age of 54.6(45-63) years.According to the timing of postoperative active shoulder joint re-habilitation,patients were divided into three groups:4-week group (n=27),5-week group (n=31),and 6-week group (n=32).The function,range of motion and pain of the shoulder joint,as well as patient anxiety and depres-sion levels were assessed before surgery and after rehabilitation.Results The Constant-Murley shoulder function scale ( CMS) score and the University of California ( UCLA) shoulder rating scale score were comparable among the three groups on admission (P>0.05),which were all significantly improved after surgery (P<0.05),with the 4-week group showing the best CMS score at all scales,followed by 5-week group and then 6-week group at 3,6,and 12 months after discharge (P<0.05 compared among groups).The UCLA shoulder rating scale score showed a similar increasing trend with CMS:at 3,6,and 12 months after discharge,the scores were 16.9±2.0,25.4±2.3 and 30.6±2.5 for the 4-week group,significantly higher at each time point than those for 5-week group (13.9±1.7,20.9±1.9 and 24.6±2.2) and 6-week group (12.6±1.6,16.8±1.8 and 22.4±2.1,P<0.05).Moreover,the shoulder joint range of motion in all directions of the UCLA rating scale was significantly improved at 3,6,and 12 months after discharge,with the 4-week group showing the highest score,followed by the 5-week group,and then the 6-week group (P<0.05 compared among groups).The VAS,SAS,and SDS scores were largely decreased after dis-charge (P<0.05 compared with before surgery),with the 4-week group showing the lowest score,followed by the 5-week group and then the 6-week (P<0.05 compared among groups).None cases of re-fracture or internal fixation failure were reported during rehabilitation exercise or within 12 months after discharge.Conclusion In patients with frozen shoulder combined with RCI,active shoulder rehabilitation starting at 4 weeks postoperatively may be more conducive to restoring shoulder function and mobility,and reducing shoulder pain.