[Rare indication for a simple hip prosthesis with an extra-large femoral head following multiple failed exchange operations].

In certain rare cases of failure following multiple exchange arthroplasty at the hip, it is possible to create a strong and reliable connection between the pelvis and the femur, without replacing the acetabulum, by fitting a custom-made extra-large femoral head into the existing and stable large cavity. Two cases in which this method was used are described here and recommended for consideration in similar situations.