[Diagnosis and treatment of 4 patients with knee discoid medial meniscus under arthroscopic].

Objective: To explore clinical characteristics of 4 patients with knee discoid medial meniscus under arthroscopic.

Methods: From April 2012 to May 2015, 4 patients(4 knees) with knee discoid medial meniscus were treated with arthroscopic, including 1 male and 3 females, aged from 7 to 56 years old with an average of 26 years old. All patients were performed discoid meniscus plasty under arthroscopic.