Materials and Methods: There were two groups of cases examined with routine MR imaging of knee. One group had 23 patients with discoid meniscus, from which 10 cases were performed with arthroscopy.

材料和方法：23例盘状半月板病例中10例为关节镜证实，另收集23例非盘状半月板膝关节mri作为对照组。

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He underwent a routine arthroscopy and micro-fracture to two small areas in his right knee and will be non weight-bearing for six to eight weeks.

BBC: Flintoff undergoes knee surgery