Factors Affecting the Age of Admission of Postmenopausal Women to an Osteoporosis Outpatient Clinic

Address for Correspondence: Dr. Cemil Bilir, Duzce University Faculty of Medicine, Department of Internal Medicine, Duzce, Turkey Phone: +90 380 541 41 07 E-mail: cebilir@yahoo.com Abstract Objective: Menopause age and bone mineral density are positively related and there is a rapid bone loss in the early postmenopausal period. A ratio of 30% of post-menopausal women are affected from osteoporosis developing due to bone loss and this causes 40% risk of fracture in a 50year old woman. Materials and Methods: In this sudy, serum osteocalcin and urine deoxypridinoline levels were analyzed in 102 postmenapausal and 48 healthy premenopausal controls who presented to gynecology outpatient clinic. Bone densitometry was obtained from all postmenopausal women. Postmenopausal patients were further divided into four groups according to time since menopause: 20 years. Results: Mean (SD) age in 48 premenopausal women was 47.7 (3.7) while it was 56.5 (6.8) in 102 post-menopausal women. 34 out of 102 post-menopausal women had surgical menopause due to bilateral oopheroctomy+hysterectomy while the remaining had natural menopause. No significant difference was found in bone-turnover markers between women with surgical and natural menopause. Conclusion: Although there was not a statistically significant difference between bone-turnover markers, bone mineral density stays lower in surgical menopausal patients and this difference disappear only after about 20 years. Also bone turnover markers are usually high up to five years after surgical menopause and return to normal levels after then. Thus, our study suggested that oopheroctomy does not cause additional risk to hysterectomy. We also suggest that there is not a longterm relationship between serum bone turnover markers or bone density and the etiology of menopause. (Turk J Rheumatol 2010; 25: 29-33)