The Prevalence of Osteoporotic Vertebral Compression Fractures (OVCF) in Korean Post Menopausal Women

Inclusion Criteria: * Subjects who were diagnosed post menopausal state * Subjects over 50 years old * The Definition of Post Menopause Women : Women whose last menstruation was over 12months ago * Subjects who visit orthopedic surgery * Subjects who have informed consents Exclusion Criteria: * Subjects who are not confirmed as post menopause state * Subjects who do not understand the contents of questionnaire * Subjects over 80 years old * Subjects experienced any high energy fracture (including trash and fall) within 3 months. * Subjects experienced a fracture except vertebral fracture within 6 months * Unable to evaluate L-spine BMD over 2 levels because of spinal fracture or instrumentation for L-spine 1-4. * Unable to evaluate BMD at both femur because of hip fracture or instrumentation.