AB0824 THE EFFECTS OF CEMENT VOLUME DISTRIBUTION OF PERCUTANEOUS KYPHOPLASTY IN OSTEOPOROTIC VERTEBRAL FRACTURE

Background Osteoporotic vertebral compression fractures (OVCF) account for 45% of osteoporotic fractures. It cause severe back pain, unable walk or even stand Percutaneous kyphoplasty (PKP) is commonly used to treat painful OVCF, effective relieve pain and walking ability. But there have been few clinical studies that have specifically explored the relationship of the cement volume distribution rate and clinical outcomes. Objectives To access the effect of the cement volume distribution pattern in percutaneous kyphoplasty. Methods We retrospectively reviewed 126 cases of osteoporotic compression fractures treated with percutaneous kyphoplasty from Jan 2005 to May 2015. The cement volume distribution (CVD) was measured with X-ray and CT scan. 126 thoracolumbar vertebrae were divided into two groups based on CVD ratio: 51 vertebrae in group A with CVD ratio 2. The relationships of the cement volume distribution and clinical outcomes of pain, vertebral height and kyphotic angle change between the two groups were compared Results The mean duration of follow-up was 25 months (range 11∼76), and the mean age was 68.2±8.7 years. Correlation of volume of cement distribution measured by CT scan and X-ray is 89.3% (P Conclusion Larger volume of cement distribution, greater correction of kyphosis. The greater distribution of the cement without leakage would be suggested when the limited volume of cement is injected. References [1] Rebolledo B J, Gladnick B P, Unnanuntana A, et al. Comparison of unipedicular and bipedicular balloon kyphoplasty for the treatment of osteoporotic vertebral compression fractures A prospective randomised study[J]. Bone Joint J, 2013, 11(3):401-406. [2] Lian-Hua L I, Tian-Sheng S, Zhi L, et al. Comparison of unipedicular and bipedicular percutaneous kyphoplasty for treating osteoporotic vertebral compression fractures: a meta-analysis[J]. Chin Med J (Eng), 2013, 126(20). [3] Song B K, Eun J P, Oh Y M. Clinical and radiological comparison of unipedicular versus bipedicular balloon kyphoplasty for the treatment of vertebral compression fractures[J]. Osteoporosis International, 2009, 20(10):1717-1723. Acknowledgement National Natural Science Foundation (81703163) Disclosure of Interests None declared