Total Hip Arthroplasty with Hydroxyapatite-Coated Anatomic Femoral Stem / 대한정형외과학회잡지

ABSTRACT

PURPOSE: To evaluate minimum 5-year results of total hip arthroplasty using a hydroxyapatite (HA)-coated anatomic femoral stem. MATERIALS AND METHODS: Fifty hips in 46 patients, received total hip arthroplasty using a HA-coated anatomic femoral component, between March 1992 and April 1995, 39 hips (36 patients) were available for this study. RESULTS: The mean preoperative Harris hip score of 55.2 points increased to 91.5 points at one year, but reduced to 81.9 points at the last follow-up. Radiolucency was seen in 5 hips (12.8%) on the last follow-up radiograms. Femoral osteolysis occurred in 7 hips (17.9%) on the last follow-up radiograms. Four femoralstems (10.3%) were revised due to femoral osteolysis and loosening. The average duration between index operation and revision was 123 months. CONCLUSIONS: The HA-coated anatomical femoral stem gave an increased Harris hip score and lowered the incidence of thigh pain, however it did not prevent osteolysis due to polyethylene wear.