ZHANG Liang,GAO Liangbin,LI Jian.Effect of vertebral bone mineral density on bone cement distribution volume in percutaneous vertebroplasty[J].Chinese Journal of Spine and Spinal Cord,2011,(11):915-918.
Effect of vertebral bone mineral density on bone cement distribution volume in percutaneous vertebroplasty
Received:May 06, 2011  Revised:June 28, 2011
English Keywords:Vertebroplasty  Vertebral bone density  bone cement  Diffusion volume  Injection volume
Fund:广东省医学科研基金项目(编号:A2011276),广州市医药卫生科技项目(编号:2009-YB-165)
Author NameAffiliation
ZHANG Liang Department of Orthopaedicsthe Third Affiliated Hospital of Guangzhou Medical CollegeGuangzhou510150China 
GAO Liangbin 中山大学附属第二医院骨外科 510120 广州市 
LI Jian 广州医学院第三附属医院骨科 510150 
王 簕  
张 志  
尹 飚  
杨 波  
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English Abstract:
  【Abstract】 Objective:To investigate the effect of vertebral bone mineral density on bone cement distribution volume in percutaneous vertebroplasty.Method:The vertebral bone mineral density(BMD) of patients with thoracolumbar vertebral compression fracture was measured preoperatively by dual energy X-ray absorptiometry. According to the diagnostic criteria of osteoporosis of the WHO,18 patients were selected and divided into three groups:normal BMD group(group A),low BMD group(group B) and osteoporosis group(group C),with each group of 6 cases.All patients underwent unilateral vertebral vertebroplasty,with 2.5ml bone cement injection for each patient.All patients experienced CT scan postoperatively,and the volume of bone cement diffusion was calculated.Result:2.5ml bone cement was injected into each of the patients successfully.The mean injection volume of bone cement in group A was 2.460±0.116cm3,2.450±0.038cm3 in group B,and 2.457±0.037cm3 in group C.The mean diffusion volume of bone cement in group A was 6.717±1.127cm3,5.650±0.669cm3 in group B,and 4.617±0.542cm3 in group C,with bigger diffusion volume than the injection volume(P<0.01).Meanwhile,the biggest diffusion volume was noted in group A,and the smallest diffusion volume in group C, which showed significant difference(P<0.05).Conclusion:The bone cement diffusion volume is bigger than injection volume in vertebroplasty.The BMD of vertebral body is closely associated with the diffusion volume of bone cement.The higher BMD of the vertebral body,the bigger diffusion volume of bone cement.
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