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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Asymptomatic Participants With a Femoroacetabular Deformity Demonstrate Stronger Hip Extensors and Greater Pelvis Mobility During the Deep Squat Task
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Asymptomatic Participants With a Femoroacetabular Deformity Demonstrate Stronger Hip Extensors and Greater Pelvis Mobility During the Deep Squat Task

机译：无髋臼畸形的无症状参与者在深蹲任务中表现出更强的髋关节伸肌和更大的骨盆活动性

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Background: Cam-type femoroacetabular impingement (FAI) is a femoral head-neck deformity that causes abnormal contact between the femoral head and acetabular rim, leading to pain. However, some individuals with the deformity do not experience pain and are referred to as having a femoroacetabular deformity (FAD). To date, only a few studies have examined muscle activity in patients with FAI, which were limited to gait, isometric and isokinetic hip flexion, and extension tasks. Purpose: To compare (1) hip muscle strength during isometric contraction and (2) lower limb kinematics and muscle activity of patients with FAI and FAD participants with body mass index–matched healthy controls during a deep squat task. Study Design: Controlled laboratory study. Methods: Three groups of participants were recruited: 16 patients with FAI (14 male, 2 female; mean age, 38.5 ± 8.0 years), 18 participants with FAD (15 male, 3 female; mean age, 32.5 ± 7.1 years), and 18 control participants (16 male, 2 female; mean age, 32.8 ± 7.0 years). Participants were outfitted with electromyography electrodes on 6 muscles and reflective markers for motion capture. The participants completed maximal strength tests and performed 5 deep squat trials. Muscle activity and biomechanical variables were extrapolated and compared between the 3 groups using 1-way analysis of variance. Results: The FAD group was significantly stronger than the FAI and control groups during hip extension, and the FAD group had greater sagittal pelvic range of motion and could squat to a greater depth than the FAI group. The FAI group activated their hip extensors to a greater extent and for a longer period of time compared with the FAD group to achieve the squat task. Conclusion: The stronger hip extensors of the FAD group are associated with greater pelvic range of motion, allowing for greater posterior pelvic tilt, possibly reducing the risk of impingement while performing the squat, and resulting in a greater squat depth compared with those with symptomatic FAI. Clinical Relevance: The increased strength of the hip extensors in the FAD group allowed these participants to achieve greater pelvic mobility and a greater squat depth by preventing the painful impingement position. Improving hip extensor strength and pelvic mobility may affect symptoms for patients with FAI.
机译：背景：凸轮型股骨髋臼撞击（FAI）是一种股骨头-颈部畸形，导致股骨头与髋臼缘之间异常接触，从而导致疼痛。但是，一些畸形的人不会感到疼痛，因此被称为股骨髋臼畸形（FAD）。迄今为止，只有少数研究检查了FAI患者的肌肉活动，这些活动仅限于步态，等距和等速髋屈曲以及伸展任务。目的：比较深蹲任务中FAI和FAD参与者体重指数与健康对照相匹配的（1）等距收缩过程中的臀部肌肉力量和（2）下肢运动学和肌肉活动。研究设计：受控实验室研究。方法：招募三组参与者：FAI患者16例（男14例，女性2例;平均年龄38.5±8.0岁），FAD参与者18例（15例男性3例女性;平均年龄32.5±7.1岁）; 18名对照组参与者（男16名，女2名;平均年龄32.8±7.0岁）。参与者配备了6条肌肉上的肌电图电极和用于运动捕捉的反射标记。参与者完成了最大力量测试并进行了5次深蹲试验。外推肌肉活动和生物力学变量，并使用方差单向分析比较3组之间的差异。结果：在髋关节伸展过程中，FAD组明显强于FAI和对照组，并且FAD组的矢状骨盆运动范围更大，并且深蹲的深度比FAI组更大。与FAD组相比，FAI组可以更大程度，更长的时间激活髋部伸肌以完成下蹲任务。结论：与有症状的FAI相比，FAD组更强的髋伸肌与更大的骨盆运动范围相关，允许更大的骨盆后倾，可能降低深蹲时发生撞击的风险，并导致深蹲深度。临床意义：FAD组中髋部伸肌力量的增强使这些参与者能够通过防止疼痛的撞击位置来实现更大的骨盆活动度和更大的下蹲深度。髋关节伸肌力量和骨盆活动性的改善可能会影响FAI患者的症状。

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