Effect of femoroacetabular impingement (FAI) on hip motion in young adults

描述(申请人提供)：髋臼撞击(FAI)对年轻人髋关节运动的影响髋臼撞击(FAI)是年轻人髋关节疼痛的一个日益公认的来源，已被认为是导致唇部损伤和髋关节骨关节炎(OA)的原因之一。FAI是指髋臼(“钳形”FAI)或股骨(“凸轮”FAI)的结构异常，在髋关节屈曲和内旋转时导致髋臼和股骨之间的撞击。目前对FAI的治疗方法包括手术切除或重新定位 股骨或髋臼或两者兼而有之。据估计，美国每年进行的FAI手术数量为5万例，年增长率为15%，这表明FAI是一个日益严重的健康问题。虽然结构确实会导致臀部疼痛，但越来越多的证据表明，运动模式也起到了重要作用。这一系列研究的总体目标是改善髋关节疼痛的治疗，特别是年轻人的治疗，防止或减缓软骨损伤的进展，并减少髋关节置换的需要。该项目的目的是评估疼痛的FAI患者与没有髋部疼痛的人的运动模式，并测试这些模式中病理特定的和肢体特定的差异。识别可能导致髋部疼痛的运动模式的差异可以改进对髋部疼痛患者的非侵入性治疗。为了测试这些差异，我们将使用在有痛苦的FAI的受试者和没有臀部疼痛的受试者的任务中收集的运动学数据来评估运动模式，这些任务包括行走、跑步、上下台阶、单腿蹲下、仰卧直腿抬起和俯卧式髋关节伸展。我们假设，与没有髋关节疼痛的受试者相比，患有疼痛的FAI的受试者将表现出更接近其髋关节屈曲、内收和内旋可用范围的末端的运动模式。我们认为，这些运动模式会导致受试者的臀部疼痛。基于两种类型FAI之间关节损伤的不同模式，我们假设钳形FAI的人将表现出不同于凸轮FAI的人的运动模式。从这项研究中获得的知识有可能通过确定可以作为廉价和非侵入性治疗干预措施(如神经肌肉再训练)的目标的运动模式，来改变FAI患者的治疗方向。

DESCRIPTION (provided by applicant): Effect of femoroacetabular impingement (FAI) on hip motion in young adults Femoroacetabular impingement (FAI) is an increasingly recognized source of hip pain in young adults and has been implicated as a cause of labral injury and hip osteoarthritis (OA). FAI is a structural abnormality of the acetabulum ("pincer" FAI) or femur ("cam" FAI) which results in impingement between the acetabulum and femur during hip flexion and internal rotation. Current treatment for FAI includes surgical procedures to resect or reorient the femur or acetabulum or both. The number of FAI surgeries being performed in the US is estimated at 50,000 per year, with an annual growth rate of 15%, indicating that FAI is a growing health concern. While structure does contribute to hip pain, increasing evidence suggests that movement patterns also play an important role. The overall goal of this line of research is to improve treatment for hip pain, especially in young adults, prevent or slow the progression of chondral damage, and reduce the need for hip arthroplasty. The purpose of this project is to assess the movement patterns of people with painful FAI compared to people without hip pain and to test for pathology-specific and limb-specific differences in these patterns Identification of differences in movement patterns which may contribute to hip pain can improve non- invasive treatment for people with hip pain. To test for these differences, we will assess movement patterns using kinematic data collected during tasks including walking, running, stepping down and up, single leg squat, supine straight leg raise and prone hip extension in subjects with painful FAI and subjects without hip pain. We hypothesize that subjects with painful FAI will display movement patterns which are closer to the end of their available range of hip flexion, adduction and internal rotation than subjects without hip pain. We believe that these movement patterns contribute to a subject's hip pain. Based on the distinct patterns of joint damage between the two types of FAI, we hypothesize that people with pincer FAI will display different movement patterns than people with cam FAI. The knowledge gained from this research has the potential to redirect treatment for people with FAI by identifying movement patterns that could be targeted by inexpensive and non- invasive therapeutic interventions such as neuromuscular retraining.