Abstract
From 1992 to 1996, a bipolar endoprosthesis has been utilized in forty elderly patients with fractures of the hip in the femoral neck. Thirty-two cases were reviewed and observed for more than six months. In twenty-six patiens, an uncemented Modular Austin Moore Hip (Zimmer) was used, In the remaining six patients, a cemented prosthesis was applied. The clinical results were evaluated by walking ability and thigh pain. Postoperative thigh pain was experienced in 73% of the patients using the uncemented prosthesis. These patients had outside mobility ability. Postoperative roentgenological analysis was conducted on thirteen patients. The following was observed:
1. sinking of the stem in excess of 3mm in seven hips
2. intramedullary bone formation at the stem tip in six hips
3. cortical hypertrophy in three hips
4. thickening of the cortex at the femoral neck in five hips
Statistically, there was no connection between thigh pain and bone chage.
