Alendronate for the Treatment of Osteoporosis in Men
Eric Orwoll, M.D., Mark Ettinger, M.D., Stuart Weiss, M.D., Paul Miller, M.D., David Kendler, M.D., John Graham, M.B., B.S., Silvano Adami, M.D., Kurt Weber, M.D., Roman Lorenc, M.D., Ph.D., Peter Pietschmann, M.D., Kristel Vandormael, M.S., and Antonio Lombardi, M.D.
Background Despite its association with disability, death, andincreased medical costs, osteoporosis in men has been relativelyneglected as a subject of study. There have been no large, controlledtrials of treatment in men.
Methods In a two-year double-blind trial, we studied the effectof 10 mg of alendronate or placebo, given daily, on bone mineraldensity in 241 men (age, 31 to 87 years; mean, 63) with osteoporosis.Approximately one third had low serum free testosterone concentrationsat base line; the rest had normal concentrations. Men with othersecondary causes of osteoporosis were excluded. All the menreceived calcium and vitamin D supplements. The main outcomemeasures were the percent changes in lumbar-spine, hip, andtotal-body bone mineral density.
Results The men who received alendronate had a mean (±SE)increase in bone mineral density of 7.1±0.3 percent atthe lumbar spine, 2.5±0.4 percent at the femoral neck,and 2.0±0.2 percent for the total body (P<0.001 forall comparisons with base line). In contrast, men who receivedplacebo had an increase in lumbar-spine bone mineral densityof 1.8±0.5 percent (P<0.001 for the comparison withbase line) and no significant changes in femoral-neck or total-bodybone mineral density. The increase in bone mineral density inthe alendronate group was greater than that in the placebo groupat all measurement sites (P<0.001). The incidence of vertebralfractures was lower in the alendronate group than in the placebogroup (0.8 percent vs. 7.1 percent, P=0.02). Men in the placebogroup had a 2.4-mm decrease in height, as compared with a decreaseof 0.6 mm in the alendronate group (P=0.02). Alendronate wasgenerally well tolerated.
Conclusions In men with osteoporosis, alendronate significantlyincreases spine, hip, and total-body bone mineral density andhelps prevent vertebral fractures and decreases in height.
Source Information
From Oregon Health Sciences University, Portland (E.O.); the Clinical Research Center of South Florida, Stuart (M.E.); San Diego Endocrine and Medical Clinic, San Diego, Calif. (S.W.); the Colorado Center for Bone Research, Lakewood (P.M.); Vancouver Hospital and Health Science Centre, Vancouver, B.C., Canada (D.K.); Ashford Specialist Centre, Ashford, Australia (J.G.); the University of Verona, Verona, Italy (S.A.); the University of Graz, Graz, Austria (K.W.); Children's Memorial Institute, Warsaw, Poland (R.L.); the University of Vienna, Vienna, Austria (P.P.); Merck, Brussels, Belgium (K.V.); and Merck, Rahway, N.J. (A.L.).
Address reprint requests to Dr. Orwoll at Oregon Health Sciences University (CR113), 3181 S.W. Sam Jackson Park Rd., Portland OR 97201.
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