Background: Arthroscopy is a typical method of diagnosing and treating knee joint disorders. This intervention aims to reduce pain and improve joint function, contributing to the overall improvement of patients' quality of life. Objectives: This study assesses the clinical outcomes and postoperative complications of arthroscopy in 135 patients at MMC Mardan from July 2020 to July 2023. Study Design: A cross-sectional study. Place and Duration of Study: Department of Orthopedic, MMC Hospital, Mardan from July 2020 to July 2023. Materials & Methods: A cross-sectional survey was conducted on 135 patients who underwent arthroscopy. Patient information was obtained from medical records, including demographics, preoperative diagnosis, surgical procedures, and postoperative results. Functional results were assessed using the Knee Society Score (KSS) and Lysholm Score. Results: Of the participants, 80 were male, and 55 were female, aged between 25 and 85 years. The common indications for arthroscopy were meniscal tears (40%), ligament injuries (30%), synovitis (20%), and loose bodies (10%). Complications reported included infection (1%), thrombophlebitis (2%), and residual pain (5%). Conclusion: Arthroscopy is effective in managing knee joint disorders, with significant improvements in pain and function. Most patients experienced favorable outcomes with a low complication rate, demonstrating the procedure's success in enhancing quality of life.