Treatment of femoral neck fractures by hemiarthroplasty.

Seventy-five patients with a displaced unstable fracture of the femoral neck were reviewed to evaluate treatment by cemented hemiarthroplasty through a posterior approach. Twenty-three patients were available for follow-up. The mean duration of follow-up was 46.7 months. Twenty-one patients (91%) showed a good clinical result. Sixteen patients (69%) had maintained their preoperative mobility or had deteriorated slightly. Major complications were divided as follows: mortality: six patients (6/75, 8%); early deep infection (3/23.4%) and dislocation (5/23, 7%). In four patients (4/23, 5%) a revision operation was required. Radiological evaluation showed possible loosening in one patient. Protrusion was not observed.