RATIONALE: Collecting and storing bone samples from patients with osteoporotic and nonosteoporotic fracture to study a special vessel subtype in the laboratory may help surgeon learn more about the relationship between bone mineral density (BMD) and a special vessel subtype (type H vessel). PURPOSE: This research study is looking at changes of a special vessel subtype in bone samples from patients with osteoporotic and nonosteoporotic fracture.
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The area of a special vessel subtype in human bone samples
Timeframe: 3 months