Metacarpal Cortical Thickness in Uremic Patients on Regular Hemodialysis

Metacarpal cortical thickness was measured in 83 patients with chronic renal failure undergoing periodic hemodialysis. Patients were dialyzed twice weekly, 8--9h per session, with a calcium concentration in dialysate of 6.5 mg/dl. Supplements of calcium, vitamin D (5,000 I.U. a day), steroid anabolic hormones, and aluminium hydroxyde were administered to all patients. They were on a normal protein intake and unrestricted physical activity. The results show that the young males have a reduction in cortical thickness as compared to age-matched controls, and that there is a progressive loss in cortical width as the length of dialysis increases. This bone loss is statistically significant in males during their first 18 months of dialysis.