Abstract

Frequent knee locking is an incapacitating condition that requires a thorough clinical, radiological and arthroscopic evaluation. The common causes are meniscal injury followed by torn anterior cruciate ligament and osteochondral loose bodies in the joint space. Our case describes an unusual case of frequent left knee locking. After clinical and radiological examinations the provisional diagnoses of medial meniscus tear was done. A diagnostic arthroscopy of the left knee revealed normal meniscus, cruciates and a medial patello femoral plica slipping into the patellofemoral joint causing the locking sensation. The plica was resected. At 6 month follow up there is no recurrence of symptoms.

Keywords: Knee locking; Meniscus; Medial plica; Resection.