Backgrounds: The medial plica of the knee during arthroscopy is between 22% and 80% and suprapatellar plica is between 10% and 87%.Management of the patients with pathological medial plica is controversial. Aim: To determine clinical outcomes after arthroscopic excision in patients with medial and suprapatellar plica.

Patients: In this prospective study , the patients who are diagnosed with knee plica syndrome were underwent arthroscopic excision. The outcomes of the surgery were recorded at one month , at three and six months, and twelve months of surgery.

Conclusions: The arthroscopic plica excision has a successful outcome for most of the patients after 1, 3, 6, and 12 months with less noninvasive complication.

Keywords: Plica syndrome; patient, MRI,Arthroscopy; complications