This is an observational study to investigate the prevalence of osteoporotic fractures in post menopausal patients. Post menopausal patients who visit OS(orthopedic surgery) including GHs(general hospitals) and clinics will be enrolled.

This is an observational study to investigate the prevalence of osteoporotic fractures in post menopausal patients. Post menopausal patients who visit OS(orthopedic surgery) including GHs(general hospitals) and clinics will be enrolled. They will take the evaluation of spine X-ray and answer to a few questions. Their medical record will be reviewed and relevant clinical findings will be collected.

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.

Postmenopausal women