A loosening prosthesis in a dialysis patient
Abstract
A haemodialysis patient with periprosthetic fractures and a history of corticosteroid use was referred for assessment for bone mineral disorders. Mixed renal osteodystrophy was diagnosed following a bone biopsy. Correction for vitamin D insufficiency did not improve the clinical signs, which prompted a potential diagnosis of hypophosphataemic osteomalacia to be considered. No causes for hypophosphataemia were found, except for phosphate dietary restrictions. Phosphorus supplementation was administered, resulting in an upturn in bone biochemical and histological parameters and increased bone mineral density, thus confirming the diagnosis of hypophosphataemic osteomalacia due to low phosphate intake. Characteristic features related to this diagnosis are shown from three repeated bone biopsies performed during the course of patient follow-up.
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Evidence Hub reads this as a case report, done in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.
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