In a retrospective study, we have assessed the efficacy of oral calcitriol on the evolution of hyperparathyroid bone disease in patients on hemodialysis. 33 patients who had received calcitriol for at least one year and up to 7 years were carefully matched with controls for gender, years on hemodialysis and severity of radiological hyperparathyroidism both at the start of haemodialysis and at the start of the study. Young patients (<20 years) were matched with each other. The dose of calci...