Methods:In 136 cases high frequency sonography was applied for diagnosing mediscus lesions,which were proved by operation or arthroscopy.

• 方法:136例经高频超声诊断半月板损伤并通过手术及关节镜检查证实的病例,采用弹响及压痛点为主的扫查部位,按损伤程度不同的三级分型。