Abstract
The importance of the calcar femoris as a supporter of the femoral prosthesis has been often emphasized in total hip replacement (T. H. R.) which has been reportedly proved by finiten element method, tension optical experiment or hip joint simulation.
T. H. R. or revision operation is sometime indicated for the case which is complicated by resorption of the calcar femoris which usually develops secondary to pseudarthrosis of the femoral neck fracture or loosening and sinking of the femoral prosthesis.
In 1978, Prof. J. Eichler developed a trochanter plate for such a case. This plate is shaped like a japanese sword quard and placed on the transsected surface at the intertrochanteric level. The collar of the femoral prosthesis seats on the plate. Both the plate and the prosthesis are fixed with bone cement.
We have used this plate in 6 cases complicated by the resorptin of the calcar femoris. Even though they have been followed only for a short time, they are doing as well as the ordinary case of T. H. R. so far.
