定制肿瘤型铰链膝关节假体置换术后假体生存率及并发症分析

目的 探讨定制肿瘤型膝关节假体置换术后的假体生存率及并发症发生率.方法 对1996年4月至2007年4月接受定制肿瘤型铰链膝关节假体置换且随访资料完整的85例进行回顾性分析,男54例,女31例;年龄11～72岁,平均(31.33±15.3)岁.骨肉瘤43例,骨巨细胞瘤31例,软骨肉瘤4例,转移瘤3例,恶性纤维组织细胞瘤2例,Ewing肉瘤1例,纤维肉瘤1例.股骨远端43例,胫骨近端42例.均行瘤段广泛切除及国产骨水泥定制肿瘤型铰链膝关节假体重建.结果 随访3～124个月,平均45.8个月.并发症发生率27.1%(23/85),股骨远端25.6%(11/43),胫骨近端28.6%(12/42);发生于术后3年内13例次,3～5年3例次,5年以上7例次.与手术相关的并发症(切口不愈合、假体周围深部感染、腓总神经损伤等)6例次,全部发生于术后3年内;与假体相关的并发症(假体松动及断裂、假体关节脱位、假体周围骨折等)17例次,发生于术后3年以内7例次、3～5年3例次、5年以上7例次.假体生存率三年79.4%、五年67.7%、七年62.3%,股骨假体分别为86.6%、79.2%、73.5%,胫骨假体分别为66.1%、53.7%、48.8%.结论 与手术相关的并发症多发生于术后3年内,与假体相关的并发症于术后3年内及5年以上高发.使用国产定制肿瘤型膝关节假体置换术后早期即可发生与假体相关的并发症.

Abstract：

Objective To retrospectively investigate the endoprosthetic survival and complications after custom-made tumor prosthesis replacement of knee joint.Methods From April 1996 to April 2007,85 patients with bone tumors around knee joints undergoing custom-prosthetic replacement were respectively analyzed,including 54 males and 31 females with an average of 31.33±15.3 years(range,11-72).The diagnoses were osteosarcoma(43 patients),giant cell tumor(31),chondrosarcoma(4),metastatic tumor(3),malignant fibrohistiocytoma(2),Ewing sarcoma(1),and fibrosarcoma(1).The distal femar was affected in 43 patients and the proximal tibia in 42.All patients in this group underwent wide resection and domestic custommade cemented endoprosthetic reconstruction.Results Mean following was 45.8 months.The overall complication rate was 27.1%(23/85),which was 25.6% in distal femar and 28.6% in proximal tibia.Thirteen complications occurred within 3 years after definite surgery,3 in 3-5 years,and 7 over 5 years.All of 6 operation-relation complications(wound dehiscence,periprosthetic infection,peroneal nerve injury,etc) occurred within 3 years.Seven prosthetic-related complications(prosthetic loosening or breaking,dislocation,periprosthetic fracture,etc)occurred within 3 years,3 occurred in 3-5 years,and 7 over 5 years after definite surgery.The overall endoprosthetic cumulative survival rate was 79.4%,67.7%and 62.3% after 3,5 and 7 years,respectively;which was 86.6%,79.2% and 73.5% in distal femur;66.1%,53.7% and 48.8% in proximal tibia.Conclusion All operation-related complications occurred within 3 years,prosthesis-related complications occurred mainly within 3 years and over 5 years postoperatively.Prosthesis-related complications could occur iu the early stage after using domestic custom-made prosthesis reconstruction.

Survival and complications in total knee replacement with custom-prosthesis after bone tumors resection

Objective To retrospectively investigate the endoprosthetic survival and complications after custom-made tumor prosthesis replacement of knee joint.Methods From April 1996 to April 2007,85 patients with bone tumors around knee joints undergoing custom-prosthetic replacement were respectively analyzed,including 54 males and 31 females with an average of 31.33±15.3 years(range,11-72).The diagnoses were osteosarcoma(43 patients),giant cell tumor(31),chondrosarcoma(4),metastatic tumor(3),malignant fibrohistiocytoma(2),Ewing sarcoma(1),and fibrosarcoma(1).The distal femar was affected in 43 patients and the proximal tibia in 42.All patients in this group underwent wide resection and domestic custommade cemented endoprosthetic reconstruction.Results Mean following was 45.8 months.The overall complication rate was 27.1%(23/85),which was 25.6% in distal femar and 28.6% in proximal tibia.Thirteen complications occurred within 3 years after definite surgery,3 in 3-5 years,and 7 over 5 years.All of 6 operation-relation complications(wound dehiscence,periprosthetic infection,peroneal nerve injury,etc) occurred within 3 years.Seven prosthetic-related complications(prosthetic loosening or breaking,dislocation,periprosthetic fracture,etc)occurred within 3 years,3 occurred in 3-5 years,and 7 over 5 years after definite surgery.The overall endoprosthetic cumulative survival rate was 79.4%,67.7%and 62.3% after 3,5 and 7 years,respectively;which was 86.6%,79.2% and 73.5% in distal femur;66.1%,53.7% and 48.8% in proximal tibia.Conclusion All operation-related complications occurred within 3 years,prosthesis-related complications occurred mainly within 3 years and over 5 years postoperatively.Prosthesis-related complications could occur iu the early stage after using domestic custom-made prosthesis reconstruction.