Objective to evaluate the effects of five factors including age, gender, disease course, extent and location of meniscectomy to the prognosis after arthroscopic meniscectomy.

Purpose of the study: Influences of total meniscectomy on articular cartilage of knee is studied to provide theoretical basis for selection of treatment methods for meniscus injury.

Surgery Group and CT intervened Group were intervened by cutting off the anterior cruciate ligament and the medial meniscus of their right knees, while the left knees as the control samples.