Wagner Revision Femoral Stem을 이용한 인공 고관절 재 치환술 = Revision Total Hip Arthroplasty using Wagner Revision Femoral Stem

다국어 초록 (Multilingual Abstract)

A retrospective follow-up study was performed on 37 revision total hip arthroplasties using Wagner revision stem in 34 patients due to the loosening of arthroplasty at the department of orthopaedic surgery, National Medical Center from March 1991 to March 1996. The average age at the surgery was 53 years old (range, 34 to 47 years). The follow-up period ranged from 2 years to 8 years. The acetabular side was revised with hemispherical cup and allograft, which was not reviewed in this study. According to the AAOS method, the bone defect of the femur was classified as cavitary type in 5 hips, combined type in 29 hips and discontinuity type in 3 hips. According to the Paprosky method, the bone defect was classified as type I in 5 hips, type IIA in 7 hips, type IIB in 8 hips and type III in 17 hips. The fresh-frozen femoral head allograft was used for filling the gap between proximal stem and cortex in recently operated 14 hips. Within this period, the loosening or failure developed in one case, but postoperative infection did not occur. Subsidence developed in three cases by less than 5 mm. The stress shielding was minimal(grade I or II according to Engh s criteria). Until the latest follow-up time, the results of this technique were excellent. We will continuously follow up these patients for the exact evaluation.