Bone loss in oophorectomized Thai women

This prospective analysis was done in 95 postmenopausal women to observe bone loss rate between 59 natural and 36 surgical menopausal women with or without hormonal replacement therapy (HRT). Bone mass measurement was performed at lumbar spines (L1-L4) and hip by dual energy X-ray absorptiometer at 0, 6 and 12 months. The results revealed that in the non-HRT group there was significant faster bone loss rate of lumbar spines (LS) and hip (H) of the surgical group at 12 months (Natural group: LS = -1.11%, H = +2.38%; Surgical group: LS = -4.51%, H = -0.66%, P < 0.05). However, there was no significant difference in bone changes of lumbar spines and hip between natural and surgical group with HRT at 12 months (Natural: LS = +2.0%, H = +4.06%; Surgical: LS = +0.62%, H = +2.28%, P > 0.05). This observation showed that without HRT oophorectomized women had greater magnitude of bone loss than women who entered menopause naturally.