Department of Orthopaedic Surgery, Horsens Regional Hospital, Denmark.
Department of Orthopaedic Surgery, Aarhus University Hospital, Denmark.
J Sci Med Sport. 2019 Apr;22(4):413-419. doi: 10.1016/j.jsams.2018.10.004. Epub 2018 Oct 17.
Little is known about hip function after hip arthroscopic surgery in patients with femoroacetabular impingement syndrome. Hence, the aim of the study was (1) to investigate changes in hip muscle strength from before to one year after hip arthroscopic surgery, (2) to compare patients with a reference group.
Cohort study with a cross-sectional comparison.
Before and after hip arthroscopic surgery, patients underwent hip muscle strength testing of their hip flexors and extensors during concentric, isometric and eccentric contraction in an isokinetic dynamometer. Reference persons with no hip problems underwent tests at a single time point. Participants completed completed the Copenhagen Hip and Groin Outcome Score (HAGOS) questionnaire and physical capacity (stair climbing loaded and unloaded, stepping loaded and unloaded and jumping) tests.
After surgery, hip flexion strength improved during all tests (6-13%, p<0.01) and concentric hip extension strength improved (4%, p=0.002). Hip flexion and extension strength was lower for patients than for reference persons (9-13%, p<0.05) one year after surgery. Higher hip extension strength after surgery was associated with better patient reported outcomes. Patients, who were unable to complete at minimum one test of physical capacity, demonstrated significantly weaker hip muscle strength. Compared with their healthy counterparts, female patients were more impaired than male patients.
One year after surgery, patients improved their maximal hip muscle strength. When compared to reference persons, maximal hip muscle strength was still impaired.
对于患有髋关节撞击综合征的患者，髋关节镜手术后髋关节功能知之甚少。因此，本研究的目的是：（1）调查髋关节镜手术后一年髋关节肌肉力量的变化；（2）与参考组进行比较。
队列研究与横断面比较。
髋关节镜手术前后，患者在等速测力计上进行髋关节屈肌和伸肌的向心、等长和离心收缩的髋关节肌肉力量测试。无髋关节问题的参考人员在一个时间点进行测试。参与者完成哥本哈根髋关节和腹股沟结局评分（HAGOS）问卷和身体能力（负重和空载爬楼梯、负重和空载跨步、跳跃）测试。
手术后，所有测试中髋关节屈曲力量均有所改善（6-13%，p<0.01），髋关节伸展力量在向心收缩时改善（4%，p=0.002）。手术后髋关节屈曲和伸展力量均低于参考人员（9-13%，p<0.05）。手术后髋关节伸展力量较高与患者报告的结果较好相关。无法完成至少一项身体能力测试的患者，髋关节肌肉力量明显较弱。与健康对照组相比，女性患者比男性患者受损更严重。
手术后一年，患者的最大髋关节肌肉力量有所提高。与参考组相比，最大髋关节肌肉力量仍受损。
