The increased incidence of fracture in postmenopausal women may be attributable, in part, to osteoporosis. Prediposing factors other than age include genetic constitution, physical activity, alcohol and caffeine abuse, and dietary calcium deficiency. A group of 15 postmenopausal women between the ages of 43 and 85 years were analyzed for bone mineral density within 4 weeks of an acute fracture of the distal radius. Dual photon absorptiometry scanning was performed on the first through fourth lumbar vertebrae. Results indicate that bone mineral densities below the fracture threshold (0.965 g/cm2) were seen in 9 of 15 (60%) patients. Each woman was given 1500 mg/day calcium supplementation for 1 year. At 1 year, each woman was contacted for a follow-up bone mineral density analysis. While no significant increase in bone mineral density was seen, calcium supplementation appeared to inhibit further bone loss. The results of this study support previous work which has indicated that supplemental calcium may be beneficial in combatting age-related bone loss.