J Orthop Sports Phys Ther. 2019 Dec;49(12):908-916. doi: 10.2519/jospt.2019.8356. Epub 2019 Jul 23.
The hip joint biomechanics of people with femoroacetabular impingement (FAI) syndrome are different from those of healthy people during a double-leg squat. However, information on biomechanics during a single-leg squat is limited.
To compare hip joint biomechanics between people with FAI syndrome and people without hip pain during double-leg and single-leg squats.
Fourteen people with FAI syndrome (cam, n = 7; pincer, n = 1; mixed, n = 6) and 14 people without hip pain participated in this cross-sectional, case-control, laboratory-based study. Three-dimensional biomechanics data were collected while all participants performed a double-leg and a single-leg squat. Two-way mixed-model analyses of variance were used to assess group-by-task interactions for hip joint angles, thigh and pelvis segment angles, hip joint internal moments, and squat performance variables. Post hoc analyses for all variables with a significant group-by-task interaction were performed to identify between-group differences for each task.
There were significant group-by-task interactions for peak hip joint ( = .014, = 0.211) and thigh segment ( = .009, = 0.233) adduction angles, and for peak hip joint abduction ( = .002, = 0.308) and extension ( = .016, = 0.203) internal moments. There were no significant group-by-task interactions for squat performance variables.
Biomechanical differences at the hip between people with FAI syndrome and those without hip pain were exaggerated during a single-leg squat compared to a double-leg squat task.
Diagnosis, level 4. .
患有股骨髋臼撞击综合征（FAI）的人与健康人在双腿深蹲时相比，髋关节的生物力学不同。然而，单腿深蹲时的生物力学信息有限。
比较 FA I 综合征患者和无髋关节疼痛患者在双腿和单腿深蹲时髋关节的生物力学。
本横断面病例对照实验室研究纳入了 14 名 FA I 综合征患者（凸轮型，n=7；钳夹型，n=1；混合型，n=6）和 14 名无髋关节疼痛的患者。所有参与者均进行双腿和单腿深蹲，同时采集三维生物力学数据。采用两因素混合模型方差分析评估髋关节角度、大腿和骨盆节段角度、髋关节内力矩和深蹲表现变量的组间-任务交互作用。对所有具有显著组间-任务交互作用的变量进行事后分析，以确定每个任务的组间差异。
髋关节（ =.014， = 0.211）和大腿节段（ =.009， = 0.233）内收角以及髋关节外展（ =.002， = 0.308）和伸展（ =.016， = 0.203）内力矩的峰值在组间-任务交互作用方面具有显著差异。深蹲表现变量在组间-任务交互作用方面无显著差异。
与双腿深蹲相比，FA I 综合征患者与无髋关节疼痛患者在单腿深蹲时髋关节的生物力学差异更大。
诊断，4 级。
