Objectives: Knee stiffness following surgeries around the knee significantly limits functional mobility and quality of life. This study aimed to evaluate the clinical outcomes of arthroscopic arthrolysis combined with minimally invasive quadricepsplasty in the management of post-surgical knee stiffness Methods: This retrospective study included 14 patients with knee stiffness persisting for at least one year despite implant removal. All patients underwent arthroscopic arthrolysis with modified quadricepsplasty through a small midline incision over the superior pole of the patella. The procedure involved isolation of the rectus femoris, release of medial and lateral adhesions, and elevation of the quadriceps from the underlying femur. A standardized aggressive postoperative rehabilitation protocol was followed. Patients were evaluated for demographic details, knee range of motion (ROM), Visual Analog Scale (VAS), and Knee Society Score (KSS) at a minimum follow-up of 12 months. Results: The mean patient age was 34.7 ± 5.2 years, with a mean duration of knee stiffness of 1.4 ± 0.6 years from the index injury. Mean preoperative extension lag was 15° and flexion was 50°, which improved significantly to 3° and 115°, respectively, at final follow-up. Significant postoperative improvements were observed in both KSS and VAS scores. According to Judet’s criteria, most patients achieved excellent outcomes. One patient developed minor wound complications, which resolved with conservative management. Conclusion: Arthroscopic arthrolysis combined with minimally invasive quadricepsplasty is an effective and safe treatment for post-surgical knee stiffness, providing significant improvements in knee ROM, pain relief, and functional outcomes with minimal complications. Level of evidence:IV
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