Abstract
The influence of androgen deprivation therapy (ADT) for prostate cancer on the hip geometric properties evaluated by dual-energy X-ray absorptiometry (DXA) has not yet been demonstrated. This study aimed to investigate the changes in these properties after 1 year of ADT. A total of 65 Japanese men with prostate cancer who underwent ADT for the first time in our facility were included in the study. The hip geometric parameters and the bone mineral density (BMD) taken before and after 1 year of ADT were retrospectively examined. With ADT, we not only confirmed significant BMD annual changes in the lumbar spine, the femoral neck, and the total hip of −1.65%, −1.91%, and −2.20%, respectively, but we also confirmed significant annual changes in cross-sectional areas, cross-sectional moments of inertia, and section modulus in the narrow femoral neck of −2.55%, −3.50%, and −3.14%, respectively. The annual rate of decrease in the femoral neck BMD was significantly higher in patients with visceral fat obesity than in those without visceral obesity (−1.79% vs. −0.28%). One year of ADT for Japanese men with prostate cancer might decrease the strength of bending and the structural rigidity as well as BMD at the femoral neck.
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