ABSTRACT
PURPOSE: It is widely accepted that partial meniscectomy has done in case of the discoid meniscus. Authors classify the type of the discoid meniscus and report the results of different treatment according to type of tear. MATERIALS AND METHODS: We analyze the 68 patients, 70 knees. After classifying the type of tear according to the arthroscopic findings, we compare the findings of physical examination and X-ray each other, predict arthroscopic findings by MRI findings and report the results of different treatment according to type of tear. RESULTS: There are type 1(no tear) 8 knees(l 1.4%), type 2(longitudinal tear) 4 knees(5.7%), type 3(horizontal tear) 19 knees(27.1%), type 4(central hole) 9 knees(12.9%), type 5(peripheral tear) 10 knees(14.2%), type 6(transverse tear) 8 knees(11.4%) and type 7(complex tear) 12 knees(17.1%). We has performed partial meniscectomy after meniscal repair of tear site in some cases of type 5,6,7 and got the good results at the follow up period. There is no progressive arthritic changes. CONCLUSION: It is necessary to diagnose the exact type of tear and to treat according to it.