The British Journal of Rheumatology, Vol 37, 87-94, Copyright © 1998 by British Society for Rheumatology
TP van Staa, L Abenhaim and C Cooper
This study examined the effects of cyclical etidronate, when used in
routine clinical practice, on the prevention of fracture. Information was
obtained from 550 general practices in the UK that provide their medical
records to the General Practice Research Database. A total of 7977 patients
taking cyclical etidronate treatment and 7977 age-, sex- and
practice-matched control patients with a diagnosis of osteoporosis were
analysed. People taking cyclical etidronate had a significantly reduced
risk of non-vertebral fracture (by 20%) and of hip fracture (by 34%)
relative to the osteoporosis control patients. The relative risk of
non-vertebral fracture was 0.80 (95% confidence interval 0.70-0.92), that
of hip fracture 0.66 (0.51-0.85) and that of wrist fracture 0.81
(0.58-1.14). When fracture incidence rates were compared between the two
groups, the rate of non-vertebral, hip and wrist fracture decreased
significantly (P < 0.05) with increasing etidronate exposure. The
results of this study complement and extend clinical observations
supporting the anti-fracture efficacy of cyclical etidronate therapy.
ORIGINAL PAPERS
Use of cyclical etidronate and prevention of non-vertebral fractures
Procter & Gamble Pharmaceuticals, Staines.
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