Evaluating a 3-Month Physical Impairment and Functional Performance-Based Rehabilitation Program After Hip Arthroscopy for Femoroacetabular Impingement (FAI) Syndrome

OBJECTIVE: To evaluate a 3-month post–hip arthroscopy rehabilitation program within a randomized controlled trial comparing hip arthroscopy to sham surgery for femoroacetabular impingement syndrome (HIP ARThroscopy International [HIPARTI] trial) by describing exercise adherence, type, and pain; 6-month changes in International Hip Outcome Tool-33 (iHOT-33); and physical impairments and functional performance. DESIGN: Exploratory cohort study nested in a pilot randomized controlled trial. METHODS: Participants aged 18 to 50 years with femoroacetabular impingement syndrome completed a 3-month, physical therapist–led, postsurgical rehabilitation program, self-reporting rehabilitation adherence and pain levels on the visual analog scale using weekly training diaries. Baseline to 6-month changes in quality of life (iHOT-33), physical impairment (hip strength, range of motion [ROM]), and functional performance (single-leg hop, side bridge endurance) were reported as mean (standard deviation). RESULTS: Twenty-nine people (37% female, 29.9 ± 7.9 years) participated. Hip extension, abduction, and functional exercises were performed most often. Exercise adherence analysis was limited by underreporting. Training diary data adequate to assess adherence were available for 20 participants (69%). Among those with available data, 16 (80%) met the predefined adherence target of ≥2 sessions per week, and average pain remained acceptable (