抄録
We evaluated the postoperative X-ray of the femoral trochanteric fracture using Proximal Femoral Nail Antirotation (PFNA), which is a new implant for patients with proximal femoral fracture made by AO/ASIF group. From April 2004 to May 2006, 25 patients, 5 men and 20 women, were treated for femoral trochanteric fracture using PFNA procedure. The mean age was 84 years (69-98 years). Twenty five fractures were classified using AO/ASIF classification, 10 as 31A1, 14 as 31A2, and 1 as 31A3, respectively.
Tip-apex distance (TAD) average was 21±4 millimeters. As evaluated according to the zones in the femoral head, PFNA blade were most frequently placed in the center-center zone (23 of 25 cases). No cases of cutout were observed. Three months after operation sliding length of PFNA blade average was 3.1±4.0 millimeters. There was no statistical relationship between fracture classification, TAD, blade position, and sliding length of PFNA blade. In two cases the sliding length was over 10 millimeters. In these cases some gap of fracture site remained. In order to reduce the excessive sliding of PFNA blade it is necessary to reduce the gap to a minimum.
