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  • Title: Incidence of hip osteonecrosis among renal transplantation recipients: a prospective study.
    Author: Lopez-Ben R, Mikuls TR, Moore DS, Julian BA, Bernreuter WK, Elkins M, Saag KG.
    Journal: Clin Radiol; 2004 May; 59(5):431-8. PubMed ID: 15081848.
    Abstract:
    AIM: To investigate whether a lessened glucocorticoid cumulative dose would lead to a decreased incidence of femoral head osteonecrosis. METHODS: Newly transplanted in-patients (n = 49) underwent hip radiographs and magnetic resonance imaging (MRI) a mean of 17.0+/-4.3 (range 8-29) days after renal transplantation. For the 48 patients without evidence of prevalent osteonecrosis, imaging at a mean of 5.9+/-0.8 (range 4.8-8.7) months after renal transplantation was graded for presence/absence of femoral head osteonecrosis by two blinded radiologists. Sociodemographic and disease characteristics of patients were compared to identify potential associations with incident osteonecrosis. RESULTS: At 6-month follow-up, only two patients (4%) had osteonecrosis of the femoral head (three hips). The two primary radiologists had excellent agreement between osteonecrosis diagnosis (kappa coefficient=0.78). Both cases of a definite MRI diagnosis of osteonecrosis occurred in patients who were in the highest tertile of glucocorticoid dosage. CONCLUSION: Osteonecrosis was uncommon among a prospective cohort of renal transplant recipients within 6 months after engraftment.
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