1990 年 39 巻 1 号 p. 167-171
We have treated the fractures of the femoral shaft after total hip replacement (THR) with K-U plate fixation. There are many kinds of metal substance in the operated region, such as femoral component, plate, screws, and wire. To estimate the affection of these mixture to fractured part, the radiographical changes in the cases were ivestigated.
The number of patients was five, one man and four women. The average age at follow-up was 64.6 years old (range, fifty-three to seventy-four years old). The follow-up period after terminal operation averaged eighty months (sixty to one hundred months) except one case with short period.
The radiographs of the affected side showed the clear zones in acetabulum and proximal part of the femur in two cases, but showed no changes around metal substance during those period. K-U plate fixation did not seem to cause any problem on the biocompatibility for the long period, and seemed to show little trouble for the prognosis of THR.