Squat and gait biomechanics 6 months following hip arthroscopy for femoroacetabular impingement syndrome. Issue 1 (18th February 2020)

• Record Type: Journal Article
• Authors: Cvetanovich, Gregory L; Farkas, Gary J; Beck, Edward C; Malloy, Philip; Jan, Kyleen; Espinoza-Orias, Alejandro; Nho, Shane J
• Is Part Of: Journal of hip preservation surgery. Volume 7:Issue 1(2020)
• Page Start: 27
• Page End: 37
• Publication Date: 2020-02-18
• Subjects: Hip joint -- Surgery -- Periodicals; 617.581059
• DOI: 10.1093/jhps/hnaa004
• Languages: English
• ISSNs: 2054-8397

Abstract

Abstract: The purpose of this study was to (i) assess whether squat and gait biomechanical measures improve in patients with femoroacetabular impingement syndrome (FAIS) 6 months after surgery compared to pre-operative measures and (ii) compare biomechanical properties to controls without FAIS. In this prospective study, biomechanical data during a double leg squat task and gait for 15 FAIS patients and 9 controls were collected using three-dimensional motion analysis. Data were collected in the FAIS group at two-time points, pre-operatively and 6-month post-operatively following arthroscopic hip surgery, and at a single time point for the healthy controls. Independent sample's t -test were used to compare the FAIS group to the controls, and paired samples t -test were used to determine within-group differences before and after hip arthroscopy in the FAIS group. The results indicated that there were significant within-group increases for sagittal plane moment rate during the double leg squat task ( P = 0.009) between the pre-operative and post-operative time points for the FAIS group. Between-group differences showed that FAIS patients pre-operatively exhibit slower squat velocities during the descent ( P = 0.005) and ascent phase ( P = 0.012) of a double leg squat when compared healthy controls. Reduced hip external rotation moments during gait ( P = 0.02) were also found between FAIS patients pre-operatively and controls. In conclusion, alterations in hip biomechanics are present before surgery for FAIS when compared to healthy controls, and joint mechanics change 6 months after surgery. However, the biomechanical differences during a double leg squat and gait were minimal.