Objective:To discuss improvement of knee extension function after treatment of proximal tibial osteo-sarcoma with tumor prosthesis combined with artificial patch technique. Methods:From March 2003 to December 2015,20 cases of proximal tibia osteosarcoma were selected (12 males,8 females). The mean age was 14. 5 years old (range:9～27 years old). According to the operation way,20 cases were divided into two groups. Group 1:10 cases of proximal tibial osteosarcoma were treated by tumor prosthesis replacement. Group 2:10 cases of proximal tibial osteo-sarcoma were treated by tumor prosthesis combined with artificial patch technique. To measure maximum angle of ac-tivel extension of knee joint in 6 months after operation and to do statistical analysis of data. Results:The angle of knee extension after operation in group 1 was (14. 4 ± 4. 84)°. The angle of knee extension after operation in group 2 was (73. 8 ± 8. 59)°. The angle of knee extension in group 2 was better than that in group 1 (P ＝5. 76E-14＜0. 05). Conclusion:Treatment of proximal tibial osteosarcoma with tumor prosthesis combined with artificial patch technique can significantly improve the knee extension function after operation.%目的:探讨肿瘤假体联合人工补片技术治疗胫骨近端骨肉瘤术后膝关节主动背伸功能改善情况.方法:选取2003年3月至2015年12月在我科治疗且有完整资料的胫骨近端骨肉瘤患者20例,男性12例,女性8例,平均年龄14. 5岁(9～27岁).按照手术方式不同分为两组,组1为仅采用肿瘤假体置换治疗胫骨近端骨肉瘤(10例),组2为肿瘤假体联合人工补片技术重建髌韧带止点治疗胫骨近端骨肉瘤(10例).术后6个月测量膝关节主动背伸最大角度,对所获得数据进行统计学分析.结果:组1术后膝关节主动背伸角为(14. 4 ± 4. 84)°,组2术后膝关节主动背伸角为(73. 8 ± 8. 59)°,组2术后膝关节主动背伸角大于组1术后膝关节主动背伸角(P＝5. 76E-14＜0. 05),差异具有统计学意义.结论:采用肿瘤假体联合人工补片技术治疗胫骨近端骨肉瘤术后膝关节主动背伸功能得到明显改善,值得临床推广.
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