BACKGROUND Femoroacetabular impingement is a patho-mechanical hip condition that can lead to restrictions in hip motion, particularly in end-range hip flexion, adduction and/or internal rotation. Radiographic evidence of femoroacetabular impingement - cam and/or pincer morphology - is prevalent in the general and athletic populations. There is, however, a lack of studies that have analyzed the performance of sport-specific movements in people possessing these morphologies. Therefore, the purpose of this study was to compare cross-body lunge biomechanics between individuals with and without painful cam and/or pincer morphology. METHODS This was an exploratory, cross-sectional study where nine participants with cam and/or pincer morphology and symptoms, thirteen participants with asymptomatic cam and/or pincer morphology, and eleven pain-free controls performed the cross-body lunge during a single session. Trunk, pelvis, hip, knee and ankle kinematics, as well as hip, knee and ankle kinetics and vertical ground reaction forces were examined. FINDINGS Overall, the groups performed the movement similarly, with most variables statistically similar between groups. However, pelvis sagittal plane excursion throughout the entire cross-body lunge was significantly larger in those with cam and/or pincer morphology and symptoms compared to those with asymptomatic cam and/or pincer morphology (P = .046, effect size = 0.98). INTERPRETATION The results of this study show that cross-body lunge performance is similar across individuals with and without painful cam and/or pincer morphology. However, future research should aim to better understand pelvis biomechanics during sporting activities, as pelvis sagittal plane excursion may have important implications in rehabilitation and sport performance.

中文翻译：

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具有和不具有疼痛的凸轮和/或钳夹形态的个人在斜挎着肺时的生物力学。

背景技术髋臼撞击是一种病理机械性髋部疾病，其可导致髋部运动的限制，特别是在末端范围的髋部屈曲，内收和/或内部旋转方面。股骨髋臼撞击的影像学证据-凸轮和/或钳子形态-在普通人群和运动人群中普遍存在。但是，缺乏研究来分析具有这些形态的人的特定运动的表现。因此，本研究的目的是比较具有和不具有疼痛的凸轮和/或钳形形态的个体之间的跨体弓箭生物力学。方法这是一项探索性的横断面研究，其中9名参与者有凸轮和/或钳子形态和症状，13名参与者有无症状的凸轮和/或钳子形态，和11个无痛控件在单个疗程中执行了横弓箭步。检查了躯干，骨盆，臀部，膝盖和脚踝的运动学，以及臀部，膝盖和脚踝的动力学和垂直地面反作用力。结果总体而言，各组的运动相似，而各组之间的大多数变量在统计上相似。然而，与无症状的凸轮和/或钳子形貌的那些相比，具有凸轮和/或钳子形貌和症状的那些在整个斜体弓箭上的骨盆矢状面偏移明显更大（P = .046，效果量= 0.98）。解释这项研究的结果表明，在有和没有疼痛的凸轮和/或钳子形态的个体中，跨身体的弓步性能相似。然而，