膝关节软骨损伤的外科治疗进展

Current advances on surgical treatment for knee articular cartilage injuries

关节软骨损伤后,软骨缺损通常缺乏自行修复能力,要求外科修复。传统外科治疗软骨损伤包括关节镜下冲洗清理术、微骨折术、自体骨软骨移植术、异体骨软骨移植术和自体软骨细胞移植等方法。关节冲洗清理术去除了关节内致痛因素,操作简单,应用广泛,早期疗效确切。微骨折术及自体骨软骨移植对小面积的软骨缺损修复较为理想,然而远期临床观察发现钻孔渗透修复的纤维软骨会降低微骨折术后疗效,相对于重建负重区关节面完整性自体骨软骨移植更具有优势。自体软骨细胞移植及异体骨软骨移植适用于更大面积的软骨缺损,异体骨软骨移植术后存活率受到局部排斥反应影响,从而降低了远期疗效。软骨组织工程技术可最大限度地提高自体软骨细胞移植的修复质量,实现修复组织接近透明软骨,但对于累及软骨下骨板、反应性骨水肿、严重骨量丢失或下肢轴线不良具有局限性。近年来许多新技术陆续应用于软骨损伤治疗领域,创伤小、操作简便、恢复快、疗效好、花费低、多技术联合应用的外科修复技术将会成为未来的治疗软骨损伤的重要手段。目前如何提高软骨修复质量,更具抗压、耐磨性,仍亟待解决。

Chondral injuries are short of self-healing ability and need to surgical repair after articular cartilage injury. Conventional treatment includes debridement and drainage under arthroscope, micro-fracture, osteochondral autograft trans- plantation （OATS）,mosaiplasty and osteochondral allografts （OCA）,autologous chondrocyte implantation （ACI）. Debride- ment and drainage could remove pain factor, and has advantages of simple operation, wide clinical application and early clinical effect. Micro-fracture and osteochondral autograft transplantation is suitable for small area of cartilage repair,while the fur- ther effect showed that fibrous cartilage permeated by drill could decrease postoperative clinical effect. Osteochondral autograft transplantation has better advantages for reconstruction complete of wear-bearing joint. Autologous chondrocyte implantation and allogeneic cartilage transplantation are suitable for large area of cartilage defect,postoperative survival of allogeneic carti- lage transplantation is effected by local rejection reaction and decrease further clinical effect. Cartilage tissue engineering tech- nology could improve repair quality of autologous chondrocyte implantation, and make repair tissue close to transparent carti- lage, but has limit to combined subchondral bone plate, reactive bone edema, bone loss and bad axis of lower limb. New tech- nology is applied to cartilage injury, and has advantages of less trauma, simple operation, rapid recover, good clinical effect and less cost;and could be main method for treat cartilage injury with surgical repair technology. How to improve repair quality with compression resistance and abrasive resistance are expected to be solved.