The use of elliptical head hemiprosthesis in young patients – evaluation of acetabular protrusion

In the present paper, the authors evaluated the extent of acetabular protrusion of the hip joint in young patients treated with hemiarthroplasty using cementless elliptical head prosthesis. The authors analyzed a population of 28 patients treated with cementless hemiarthroplasty using elliptical head prostheses mostly for the reason of AVN and false joint of the femoral neck. A special consideration was given to patients BMI, the level of physical activity and the degree of possible lengthening and lateralization of the limb after surgery. These parameters were assumed to have a fundamental influence on the interaction of metal head and acetabulum. The study will allow elaborating a standard for management of young patients requiring hip joint arthroplasty.