[Secondary hyperparathyroidism and articular chondrocalcinosis in the aged].

The incidence of articular chondrocalcinosis (ACC) in elderly patients hospitalised in geriatric departments is approximately 30%. Routine studies including a 2 hour calcium/phosphorus balance, parathormone assay and radiological investigations enabled the selection of 73 patients with secondary hyperparathyroidism. ACC was present in 38 of these individuals (52%). They were slightly older (87 +/- 5) than cases of secondary hyperparathyroidism without radiological ACC (84 +/- 8). Among patients with secondary hyperparathyroidism with ACC, there were 90% women and 10% men, while the sex ratio in the department was 77% women and 23% men. Results of calcium/phosphorus balance and parathormone levels were similar, in the presence or absence of ACC.