Objective To observed the effects of different doses of bone cement on the clinical efficacy in osteoporotic below vertebral compression fractures treated by PVP. Methods 80 patients with thoracic vertebra compression fractures were divided in A group and B group, A group treated by PVP with 2 ml bone cement, and B group treated by PVP with 4 ml bone cement. Then observating the clinical efficacy of the two groups. Results The bone cement leakage rate in A group was significantly better than that in B group (P〈0.05). There were no significan...