• Clinical endocrinology · Dec 1989

    Elevated serum intact parathyroid hormone levels in elderly patients with hip fracture.

    • J E Compston, A C Silver, P I Croucher, R C Brown, and J S Woodhead.
    • Department of Pathology, University of Wales College of Medicine, Cardiff, UK.
    • Clin. Endocrinol. (Oxf). 1989 Dec 1; 31 (6): 667-72.

    AbstractIt has been postulated that secondary hyperparathyroidism contributes to bone loss and the high incidence of hip fractures in the elderly population, but there are no data on serum intact parathyroid hormone concentrations in these patients. In this study, serum intact parathyroid hormone (PTH) levels have been measured in 39 elderly patients with hip fracture; in addition, serum 25-hydroxyvitamin D3 and 1,25-dihydroxyvitamin D3 concentrations have been measured. Twenty patients (51.3%) had elevated serum intact PTH concentrations whilst five (12.8%) had abnormally low serum 25-hydroxyvitamin D3 levels and serum 1,25-dihydroxyvitamin D3 was reduced in only two. These results provide the first direct evidence for secondary hyperparathyroidism in elderly patients with hip fracture. Vitamin D deficiency is unlikely to be the sole cause of secondary hyperparathyroidism in these subjects and calcium deficiency by itself may also contribute.

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