Eighteen-Year Follow-Up Study of 2 Alternative Bearing Surfaces Used in Total Hip Arthroplasty in the Same Young Patients |
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| Institution: | 1. The Joint Replacement Center, Seoul Metropolitan SeoNam Hospital, Seoul, Republic of Korea;2. The Joint Replacement Center, Ewha Womans University Ewha Seoul Hospital, Seoul, Republic of Korea;1. Colorado Joint Replacement, Porter Adventist Hospital, Denver, CO;2. Department of Mechanical and Materials Engineering, University of Denver, Denver, CO;3. US Anesthesia Partners, Denver, CO;4. Porter Adventist Hospital, Denver, CO;5. Department of Orthopaedics, University of Colorado School of Medicine, Denver, CO;6. Department of Biomedical Engineering, University of Tennessee, Knoxville, TN;1. Department of Orthopaedics, Rush University Medical Center, Chicago, Illinois;2. Department of Anesthesiology, Rush University Medical Center, Chicago, Illinois;1. Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL;2. UAB School of Medicine, Birmingham, AL;3. Department of Epidemiology, UAB School of Public Health, Birmingham, AL;1. Department of Orthopaedic Surgery, Nissan Tamagawa Hospital, Tokyo, Japan;2. Department of Orthopaedic Surgery, Hokusuikai Kinen Hospital, Ibaraki, Japan;1. Department of Trauma and Orthopaedic Surgery, North Hampshire Hospital (Hampshire Hospitals NHS Trust), Basingstoke, Hampshire, United Kingdom;2. Department of Orthopaedic and Trauma Surgery, Central Finland Central Hospital, Jyvaskyla, Finland;3. Department of Orthopaedic and Trauma Surgery, Kymenlaakso Central Hospital, Kotka, Finland |
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| Abstract: | BackgroundThis study compares the long-term functional, radiographic, and computed tomography scan outcomes and implant survivorship of ceramic-on-ceramic total hip arthroplasty (C-O-C THA) and ceramic-on-highly cross-linked polyethylene total hip arthroplasty (C-O-HXLPE THA) in the same patients.MethodsIn this randomized, prospective trial conducted between January 1999 and April 2003, 133 patients (266 hips) younger than 55 years were enrolled. Each patient received C-O-C THA in 1 hip and a C-O-HXLPE THA in the other. The mean follow-up was 17.1 years (range, 15-18 years); there were 84 men and 49 women with a mean age of 53 ± 7 years (range, 25-55 years).ResultsAt the latest follow-up, mean Harris hip scores (94 vs 93 points; P = .861), pain scores (43 vs 42 points; P = .651), and patient satisfaction scores (7.8 vs 7.6 points; P = .379) were not different between the 2 groups. Eight hips (3%) in the C-O-C THA had an audible squeaking sound. The mean annual penetration rate of HXLPE was 0.0162 ± 0.032 mm per year. No osteolysis was recorded on radiographs or computed tomography scans in either group. At 17.1 years, the survival rate of the acetabular component was 97% in the C-O-C bearing group and 98% in the C-O-HXLPE bearing group (P = .923). The survival rate of the femoral component was 99% in both groups.ConclusionBoth C-O-C THA and C-O-HXLPE THA functioned well, with no osteolysis at mean of 17.1-year follow-up. |
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| Keywords: | total hip arthroplasty ceramic-on-ceramic ceramic-on-highly cross-linked polyethylene survivorship younger patients |
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