目的探讨关节镜下治疗儿童膝关节软骨严重剥脱的方法及为预防儿童膝关节严重伤残提供依据。方法 5例膝关节软骨严重剥脱均行关节镜探查术,其中2例镜下清理,3例切开清理。结果 4例在术后3~8周患膝临床好转出院,1例术后4周并发髁上无移位骨折。随访1年后5例均能快步行走,无肿痛,但活动度明显受限。结论儿童膝关节外伤在急性处理后,应严密观察,预防慢性感染;晚期彻底清创及充分灌洗引流是治疗关键。 Objective To explore the method of arthroscopic treatment of severe cartilage delamination of knee joint in children and to provide basis for preventing severe knee disability in children. Methods 5 cases of severe articular cartilage debridement underwent arthroscopic exploration, of which 2 cases under the microscope, 3 cases cut open clean up. Results In 4 cases 3 to 8 weeks after operation, the knee was clinically improved and discharged. One case had no displaced fractures on the condyle 4 weeks after operation. After one year of follow-up, all the 5 patients walked quickly without swelling and pain, but the activity was obviously limited. Conclusions Children with knee joint injury should be closely observed after acute treatment to prevent chronic infection. Thorough debridement and full lavage and drainage in late stage are the key points for treatment.