the operation involves , in addition to valgisation inter-trochanteric osteotomy , relaxation of the peri-articular muscles ( psoas , adductors , gluteus medius ) in order that the relative lengthening of the upper end of the femur related to ventricalisation of the neck should not be in contradiction with the usual principles of surgery for osteoarthrosis .
C0022417
articular
C0022408
osteoarthrosis