Cementless total hip arthroplasty with ceramic-on-ceramic bearing in patients younger than 45 years with femoral-head osteonecrosis. Int Orthop

Joint Replacement Center of Korea, Ewha Womans University School of Medicine, Seoul, Korea.
International Orthopaedics (Impact Factor: 2.11). 09/2009; 34(8):1123-7. DOI: 10.1007/s00264-009-0878-y
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Despite improvements in the quality of alumina ceramics, osteolysis has been reported anecdotally after total hip arthroplasty (THA) with use of a contemporary alumina-on-alumina ceramic bearing. The purpose of this study was to evaluate the clinical and radiographic outcomes of THA using alumina-on-alumina ceramic bearing and to determine osteolysis using radiographs and computed tomographic (CT) scans in young patients. Consecutive primary cementless THA using alumina-on-alumina ceramic bearing were performed in 64 patients (93 hips) who were younger than 45 years of age with femoral-head osteonecrosis. There were 55 men (84 hips) and nine women (nine hips). Average age was 38.2 (range 24-45) years. Average follow-up was 11.1 (range 10-13) years. Preoperative Harris Hip Score was 52.9 (range 22-58) points, which improved to 96 (range 85-100) points at the final follow-up examination. Two of 93 hips (2%) had clicking or squeaking sound. No hip had revision or aseptic loosening. Radiographs and CT scans demonstrated that no acetabular or femoral osteolysis was detected in any hip at the latest follow-up. Contemporary cementless acetabular and femoral components with alumina-on-alumina ceramic bearing couples function well with no osteolysis at a ten year minimum and average of 11.1-year follow-up in this series of young patients with femoral-head osteonecrosis.

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    • "Early clinical studies of THA inserted in cases with FHN reported high failure rates (Chandler et al. 1981, Cornell et al. 1985, Mont and Hungerford 1995). More recent studies have, however, found that the revision rate in patients with FHN is comparable to those reported in cases with POA (Piston et al. 1994, Wei et al. 1999 Fyda et al. 2002, Hungerford et al. 2006, Conroy et al. 2008, Bose and Baruah 2010, Kim et al. 2010, Johannson et al. 2011). Wei et al. (1999) concluded that patients with FHN could expect results similar to those observed in patients with primary OA, even after revision surgery. "
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    ABSTRACT: Background and purpose Previous studies of patients who have undergone total hip arthroplasty (THA) due to femoral head necrosis (FHN) have shown an increased risk of revision compared to cases with primary osteoarthritis (POA), but recent studies have suggested that this procedure is not associated with poor outcome. We compared the risk of revision after operation with THA due to FHN or POA in the Nordic Arthroplasty Register Association (NARA) database including Denmark, Finland, Norway, and Sweden. Patients and methods 427,806 THAs performed between 1995 and 2011 were included. The relative risk of revision for any reason, for aseptic loosening, dislocation, deep infection, and periprosthetic fracture was studied before and after adjustment for covariates using Cox regression models. Results 416,217 hips with POA (mean age 69 (SD 10), 59% females) and 11,589 with FHN (mean age 65 (SD 16), 58% females) were registered. The mean follow-up was 6.3 (SD 4.3) years. After 2 years of observation, 1.7% in the POA group and 3.0% in the FHN group had been revised. The corresponding proportions after 16 years of observation were 4.2% and 6.1%, respectively. The 16-year survival in the 2 groups was 86% (95% CI: 86–86) and 77% (CI: 74–80). After adjusting for covariates, the relative risk (RR) of revision for any reason was higher in patients with FHN for both periods studied (up to 2 years: RR = 1.44, 95% CI: 1.34–1.54; p < 0.001; and 2–16 years: RR = 1.25, 1.14–1.38; p < 0.001). Interpretation Patients with FHN had an overall increased risk of revision. This increased risk persisted over the entire period of observation and covered more or less all of the 4 most common reasons for revision.
    Acta Orthopaedica 12/2013; 85(1). DOI:10.3109/17453674.2013.874927 · 2.77 Impact Factor
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    • "ONFH is a cause of 10 % of total hip arthroplasties performed every year in the United States and Western Europe and from 50 % to 65 % in Korea and Japan [1, 5, 6]. Despite advances in total hip replacement (THR) fixation techniques and improved durability of bearing surfaces [7, 8], there remains a risk of multiple revision arthroplasties due to osteolysis and loosening in high activity young patients [9]. That is why hip joint preserving procedures are treatment options of first choice as they may, at least, defer arthroplasty [10–16]. "
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    ABSTRACT: Purpose The purpose of this study was to evaluate clinical and radiological outcomes of autologous osteochondral transfer (OATS) for femoral head osteonecrosis. Methods Twenty-one hips in 20 patients (one woman and 19 men), average patients' age at the time of surgery of 35.4 (range 20–56) years, were treated with OATS for osteonecrosis of the femoral head (ONFH). Seven patients at pre-collapse ARCO stages IIA and IIB were treated with OATS alone. Thirteen patients with large pre-collapse ARCO IIC and post-collapse ARCO III and IV were treated with OATS and morselised bone allografts (OATS/allograft). Harris hip score (HHS) was used for clinical evaluation of outcomes; X-rays were performed to examine the evolution of the disease. Kaplan-Meier survival curves were used to determine the failure of the procedures with conversion to THR defined as endpoint. Results Follow-up of patients treated with OATS alone was 46.14 (range 18–75) months with HHS improvement from a preoperative mean of 42 to 87.85 points at the latest follow-up examination. Only one patient in this group needed a revision operation with THR. The survival for this group of patients was 85.71 % at four years. Follow-up of patients treated with AOTS/allograft was 32.7 (range 7–84) months with HHS improvement from a preoperative mean of 35.2 to 65.7 points at the latest follow-up examination. One patient died six months after the surgery. There were five conversions to THR because of femoral head collapse in this group of patients with survival of 61.54 % at three years. Conclusion The use of osteochondral grafts offers the possibility of successful treatment for ONFH at small and medium pre-collapse stages. The outcomes of large pre-collapse and post-collapse stages were below our expectations. OATS is a time buying procedure for young patients as it may defer total hip replacement.
    International Orthopaedics 05/2013; 37(7). DOI:10.1007/s00264-013-1893-6 · 2.11 Impact Factor
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    • "Ceramic-on-ceramic bearing (CoC) in total hip arthroplasty (THA) was developed in the early 1970s [1] and has been used for almost 40 years with excellent results [2] [3]. It was introduced to reduce wear and to increase long-term survivorship [4]. "
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    ABSTRACT: Due to its advantages, ceramic-on-ceramic bearings have been widely used in young patients for almost 30 years. Long-term survivorship, low wear, and low biological reactivity to particles are some of its characteristics. Even though this material has had a lot of improvements, the risk of fracture is one of the concerns. There have been reports of fracture of ceramic in the acetabular liner and head but no fractures of both in the same patient. We report a case of a fracture in a sandwich type acetabular liner and the ceramic head in a patient involving ankylosing spondylitis. It occurred three years after the operation and with no history of direct trauma. We decided to change the bearing surfaces to metal polyethylene without removing the metal back. The patient is satisfied by the clinical results after a 5-year followup.
    04/2013; 2013(1):291691. DOI:10.1155/2013/291691
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