Can Perineal Post-Free Traction in Hip Arthroscopy Effectively Reduce Perineal Complications?

Inclusion Criteria: * Aged 15 to 60 years; * Met the diagnostic criteria of femoroacetabular impingement syndrome (FAI) and indicated for hip arthroscopy based on patient history, symptoms, signs, physical examination, imaging (pelvic anteroposterior view, frog-leg view, CT 3D reconstruction, MRI), and diagnostic injections; * Able to read and sign the informed consent form. Exclusion Criteria: * History of high-energy hip trauma, previous ipsilateral or contralateral hip surgery, avascular necrosis of the femoral head, slipped capital femoral epiphysis, Perthes disease, severe osteoporosis, tumors, acetabular stress fractures, or proliferative or immune hip diseases; * Diseases causing groin numbness, foot numbness, sexual dysfunction, urinary dysfunction, skin injuries, perineal injuries, nerve injuries, radicular pain, inner or outer thigh numbness; * Abnormal heart, lung, liver, kidney function, severe coagulation disorders, poorly controlled diabetes, judged by the researcher to have an infection risk; * Consciousness disorders, psychiatric disorders, or neuromuscular dysfunction affecting lower limb function; * Active infection foci (systemic or local infectious lesions); * Pregnancy, lactation, or planned pregnancy during the clinical study period; * Participation in another clinical trial within the past 3 months; * Patients deemed unsuitable for the clinical trial by the researcher for other reasons.