Androgen deprivation in veterans with prostate cancer: implications for skeletal health.

BACKGROUND: Common risk factors for osteoporosis in older men include smoking, heavy use of alcohol, propensity to falls, and use of bone-toxic medications such as prednisone. There is also increasing appreciation of the skeletal risk faced by men receiving androgen deprivation therapy (ADT) for prostate cancer. Measures to prevent bone loss in such patients are available. OBJECTIVE: To test the following hypotheses in a population of veterans receiving ADT for prostate cancer: (1) fracture risk factors in addition to androgen deprivation would be found in most patients, (2) bone mass measurements would be assessed in a minority of patients, and (3) a minority of the subjects would receive bisphosphonate therapy or have contraindications for such treatment. METHODS: We conducted a retrospective chart review of male veterans receiving ADT from 1993 through 2001, at the Veterans Affairs Medical Center, Madison, WI. RESULTS: One hundred and seventy-four subjects met study criteria, with a mean age of 76 years and median duration of 21 months of ADT. Eighty-one percent had risk factors in addition to ADT. Only 13% underwent bone density measurement by dual energy X-ray absorptiometry (DXA) and, of those measured, more than half had osteoporosis. Only 19% of the men received both calcium and vitamin D supplements. Antiresorptive therapy was provided to 11% of men, although more than two-thirds had no contraindications to therapy. A total of 24 men sustained a fracture after starting ADT. For men who did undergo bone density measurement, 77% received antiresorptive therapy. Of those who exhibited osteoporosis by DXA scan, 85% received antiresorptive therapy. CONCLUSIONS: Male veterans receiving ADT for prostate cancer received inadequate evaluation and treatment for osteoporosis. Based on our data, a simple and practical strategy to prompt further evaluation and improved care may be to undertake bone density measurements in men prior to or soon after commencing ADT.

Fracture risks for women in long-term care: high prevalence of calcaneal osteoporosis and hypovitaminosis D.

STUDY OBJECTIVES: To determine the prevalence of osteoporosis as assessed by peripheral bone mineral density (BMD) in women living in a nursing home, to determine how many women with low BMD had received a diagnosis of osteoporosis, to assess the prevalence of vitamin D deficiency, and to seek reasons for vitamin D deficiency. DESIGN: Measurement of calcaneal BMD and serum 25-hydroxyvitamin D. SETTING: Skilled nursing facility. PATIENTS: Forty-nine women aged 68-100 years. MEASUREMENTS AND MAIN RESULTS: Bilateral calcaneal BMD was measured by dual-energy x-ray absorptiometry and serum 25-hydroxyvitamin D by radioimmunoassay. Medical records were reviewed to assess osteoporosis risk factors, previous documentation of osteoporosis or malabsorption, and supplemental vitamin D intake. Fifty-nine percent of the 39 women with calcaneal BMD measurements (95% confidence interval [CI] 44-74%) exhibited calcaneal osteoporosis (T score < -2.5). Sixty percent (95% CI 46-74%) had 25-hydroxyvitamin D levels of 20 ng/ml or less, which is associated with secondary hyperparathyroidism; only 4% of women had levels above 30 ng/ml, recently recommended as optimal. Vitamin D status was suboptimal even in most women taking multivitamins. Osteoporosis was documented in the records of 17% of 23 women with calcaneal osteoporosis. CONCLUSION: Osteoporosis was prevalent but poorly documented in women living in the nursing home. Peripheral BMD measurements have the potential to improve the recognition and management of osteoporosis in women in long-term care facilities. The high prevalence of vitamin D deficiency, even in those taking multivitamins, indicates that practical new approaches for vitamin D repletion in this population are urgently needed.

Pharmacy-based bone mass measurement to assess osteoporosis risk.

OBJECTIVE: To evaluate elderly women's knowledge of their skeletal status, assess adequacy of calcium intake, determine the prevalence of low bone density, and determine whether peripheral bone density testing led to medical interventions in a group of rural, elderly Wisconsin women recruited in community pharmacies. DESIGN: Recruiting notices were posted in each pharmacy, and eligible women were enrolled in the order in which they volunteered. Each completed a fracture-risk questionnaire. Calcaneal bone density was measured within the following 6 weeks, using peripheral dual-energy X-ray absorptiometry. Mail surveys were used to assess interventions subsequent to the womens' study participation. SETTING: The study was conducted at 5 community pharmacies in rural Wisconsin. RESULTS: Of 133 women, 20% had calcaneal osteoporosis, defined as a T score < or =2.5 (calcaneal bone density <2.5 SDs below the young reference database). Thirty percent of women met National Osteoporosis Foundation (NOF) treatment criteria based on heel bone density and NOF-designated risk factors. Of those meeting treatment criteria, 75% were unaware of their low bone mass. Half of the women received <1200 mg/d of calcium, the recommended dose for osteoporosis prevention. Those who were taking a calcium supplement were much more likely to receive the recommended amount. Women who had discussed bone density test results with their physicians were more likely to receive central dual energy X-ray absorptiometry (DXA) measurements and/or start antiresorptive therapy than women who did not. CONCLUSIONS: Rural, elderly Wisconsin women are at substantial risk for osteoporosis, based on calcaneal bone density, but most are unaware of their risk. Compounding this risk is low calcium intake. Community screening of rural, elderly women by peripheral bone density measurement can lead to medical interventions in such individuals.

Outcomes and secondary prevention strategies for male hip fractures.

OBJECTIVE: To assess clinical outcomes and determine whether osteoporosis assessment and secondary prevention strategies were performed for male veterans hospitalized for hip fractures. DESIGN: Retrospective chart review for male veterans hospitalized for hip fracture from January 1993 through July 1999. SETTING: The Veterans Affairs Medical Center, Madison, WI. RESULTS: Medical charts were available for 46 of 53 male patients admitted for hip fracture during the study period. Three subjects were excluded because hip fracture was associated with high-impact trauma. Mean age of the 43 study patients was 72 years (range 43-91 y), and mean length of hospitalization was 16 days (median 11 d, range 3-108 d). Thirty-two (82%) of 39 veterans whose disposition was documented were discharged to a nursing home. Eleven (26%) of 43 men died within 12 months after fracture. Twelve (28%) had fractured previously. Four (10%) subsequently had another fracture. Three of 9 patients with documented ambulation status were ambulatory at 1 year. Three patients received a bone mass measurement within a prespecified time interval of 6 months subsequent to fracture. No patient's records included a diagnosis of osteoporosis either before or within 6 months after fracture. One-third of the patients had documentation of calcium or multivitamin supplementation at discharge. One patient was receiving calcitonin at the time of fracture and continued to receive it afterward. No other patient was prescribed antiresorptive therapy by the time of hospital discharge. CONCLUSIONS: Male veterans with hip fractures received inadequate evaluation and treatment for osteoporosis, although a substantial portion had documentation of recurrent fractures. Education of clinicians and creation of algorithms for management of established osteoporosis may improve outcomes for these individuals.