Australian National University Medical School, Trauma and Orthopaedic Research Unit, The Canberra Hospital, Canberra, Australia.
University of Canberra Health Research Institute, University of Canberra, Canberra, Australia.
Gait Posture. 2021 Sep;89:61-66. doi: 10.1016/j.gaitpost.2021.06.025. Epub 2021 Jun 30.
Gluteal-tendon repair (GTR) is reported to be effective for relieving pain and improving clinical function in patients with gluteal-tendon tears. The sit-to-stand (STS) task is an important activity of daily living and is often used to assess functional capacity in clinical populations. Understanding if and how STS performance is altered in individuals with gluteal tendon repair may be an effective marker of GTR outcomes as well as a possible therapeutic target for post-operative rehabilitation.
Do biomechanical parameters during STS differ between age- and sex-matched participants with and without gluteal-tendon repair?
27 participants with a GTR and 29 healthy participants performed the STS task. Data were acquired using the three-dimensional motion capture system and forceplates. Outcomes of interest were task duration, rate of force development, trunk, pelvis, and hip joint angles, moments and powers. Differences were assessed using Generalised linear multivariate models and statistical parametric mapping.
GTR patients performed the STS movement significantly slower (1.4+/- 0.40 s) compared to controls (1.1+/ -0.2 s) with a significantly lower rate of force development (35.1+/- 5.7 N/kg/ms vs 30.3+/- 8.5 N/kg/ms). There were no group differences for hip, pelvis, or trunk angle over the movement cycle or for maximal or minimal values. Furthermore, there were no significant differences detected in hip joint kinetics. However, there appeared to be substantial between-subject variability indicating different patient-specific movements patterns.
Individuals with a GTR performed the STS task about 20 % slower than healthy controls with a lower rate of force development. The individual variations indicate that participants likely employed different movement strategies to achieve STS. While the lack of differences between groups could suggest that GTR helps restore function and corrects the proposed underlying aetiology, it is possible that the STS task was not sufficiently challenging to discriminate between groups.
臀肌腱修复术（GTR）被报道可有效缓解臀肌腱撕裂患者的疼痛并改善其临床功能。坐站起（STS）任务是一项重要的日常生活活动，常用于评估临床人群的功能能力。了解接受 GTR 治疗的个体的 STS 表现是否以及如何发生改变，可能是 GTR 治疗效果的有效标志物，也是术后康复的潜在治疗靶点。
在接受和未接受臀肌腱修复术的年龄和性别匹配的参与者中，STS 期间的生物力学参数是否存在差异？
27 名接受 GTR 治疗的患者和 29 名健康参与者完成了 STS 任务。使用三维运动捕捉系统和测力台采集数据。感兴趣的结果包括任务持续时间、力量发展速率、躯干、骨盆和髋关节角度、力矩和功率。使用广义线性多变量模型和统计参数图进行差异评估。
与对照组（1.1+/ -0.2 s）相比，GTR 患者完成 STS 运动的速度明显较慢（1.4+/- 0.40 s），力量发展速率也明显较低（35.1+/- 5.7 N/kg/ms 比 30.3+/- 8.5 N/kg/ms）。在运动周期中，髋关节、骨盆或躯干角度以及最大和最小角度均无组间差异。此外，髋关节动力学也没有发现显著差异。然而，存在明显的个体间变异性，表明存在不同的患者特定运动模式。
与健康对照组相比，接受 GTR 治疗的个体完成 STS 任务的速度慢约 20%，力量发展速率较低。个体差异表明，参与者可能采用了不同的运动策略来完成 STS。虽然组间没有差异可能表明 GTR 有助于恢复功能并纠正潜在的病因，但 STS 任务可能不足以区分组间差异。
