Osteoporosis
- From bathtub ring to osteoporosis: a clinical review of the bisphosphonates
BACKGROUND Etidronate and pamidronate are bisphosphonates, a class of chemical compounds originally used to soften hard water and prevent soap scum. Etidronate was serendipitously found to abate calcification in a child with myositis ossificans progressiva.
OBJECTIVE Review the basic pharmacology of these compounds, as well as clinical uses of the approved and nonapproved forms.
DISCUSSION Etidronate is approved for the treatment of hypercalcemia, Paget’s disease of bone, and ectopic calcification, and has been used to treat hyperparathyroidism and nephrolithiasis with limited success. Recently it has been used to treat osteoporosis. Pamidronate is approved to treat hypercalcemia. These two drugs are the only bisphosphonates available in the United States.
CONCLUSIONS Clinical trials with etidronate have aroused widespread interest in the application of bisphosphonates to treat osteoporosis. Many trials are underway to evaluate these new drugs. More information will be available within the next 5 years.
- Chemical and histological features of men with osteoporosis
In this study group, increased parathyroid hormone secretion promoted a chronic high remodeling state which could have led to osteoporosis.
- Transient osteoporosis of the hip: clinical and imaging features
Radiographic findings are late and sometimes subtle.