等重量髋关节置换的初步研究

A preliminary study of equal weight total hip replacement

人工全髋关节置换术经过30多年的临床检验已经成为治疗终末期髋关节退行性疾病的有效手段[1],但目前的髋关节置换均属于等体积置换,术中去除股骨头和部分股骨颈,并用髋臼锉打磨退变髋臼后,安装等体积的髋臼杯以及股骨柄,对于骨水泥型假体还需要骨水泥将假体和自体骨骼固定在一起。无论金属假体还是骨水泥,其密度都远远超过自体骨,故这种全髋关节置换术后髋关节自身的重量会增加。

The traditional total hip replacement should be named as equal volumereplacement.The weight of the implants and bone cement is 3.88 times the weight of the removed bone and soft tissue.This significant difference may explain the long time of recovery after total hip repalcement,some patients have the feeling of having a heavy and easily fatigued hip when working out or swimming. Therefore,professor Yingze Zhang proposed a new concept of ＂equal weight total hip replacement＂, which means that produce new implants with a weight similar to the natural hip. We think that it will help reduce the pain and easily fatigue after total hip replacement.