Relationship between gait parameter characteristics and joint function recovery after arthroscopic minimally invasive surgery in patients with knee osteoarthritis

• Arthroscopic minimally invasive surgery significantly improves knee joint function in knee osteoarthritis patients, as evidenced by improved Lysholm scores and gait parameters. • Age, Kellgren-Lawrence grade, postoperative complications, and postoperative swelling regression time are independent risk factors for poor knee function recovery. • Step frequency and step speed are significantly associated with knee function recovery, with combined measurement yielding high predictive value (AUC > 0.85). • Gait analysis provides an objective, quantitative tool for postoperative assessment, complementing subjective scoring scales.