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| JIANG Xiaobing,HUANG Weiquan,PANG Zhihui.A new method for calculating the volume of intravertebral bone cement and the ratio of intravertebral bone cement to vertebral body after vertebral augmentation based on Mimics software[J].Chinese Journal of Spine and Spinal Cord,2013,(3):238-243. |
| A new method for calculating the volume of intravertebral bone cement and the ratio of intravertebral bone cement to vertebral body after vertebral augmentation based on Mimics software |
| Received:May 03, 2012 Revised:June 01, 2012 |
| English Keywords:Mimics software Bone cement quantity Vertebral augmentation The volume ratio of intravertebral bone cement to vertebral body |
| Fund:卫生部医药卫生科技发展研究中心资助课题（编号W2012ZT07）；广东省中医药管理局资助课题（编号20111185） |
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| English Abstract: |
| 【Abstract】 Objectives: To establish the accuracy and reliability of a new method for calculating the volume of intravertebral bone cement and the ratio of intravertebral bone cement to vertebral body after vertebral augmentation based on the Mimics software. Methods: 12 consecutive patients suffering from osteoporosis vertebral compression fracture were included in this study from January to March of 2012. All cases underwent vertebral augmentation during which the bone cements were injected into vertebral body, and the volume of injected bone cement was recorded by 2 spine surgeons which was defined as the real volume of intravertebral bone cement. All patients underwent the thin layer scanning of CT(Computer-tomography) at diseased segment, and the DICOM data format of CT was imported into Mimics software. Based on the Mimics software, the volume of intravertebral bone cement and the volume ratio of intravertebral bone cement to vertebral body after vertebral augmentation were calculated by the 2 surgeons, respectively, the average volume calculated by the 2 surgeons was defined as the estimated volume of intravertebral bone cement. The real volume of intravertebral bone cement and the estimated volume of intravertebral bone cement were compared for evaluating the accuracy of this new method, and the volumes of intravertebral bone cement and vertebral body calculated by the 2 different surgeons were compared for evaluating the reliability of this new method. Results: 12 patients suffered from no significant bone cement leakage during operation. The real volume of intravertebal bone cement recorded by the 2 surgeons was 4.99±0.60ml. The volume of intravertebral bone cement from surgeon A was 5.01±0.61ml and 26.66±2.93ml, respectively, while the volume from surgeon B was 5.02±0.59ml and 26.64±2.92, respectively. The estimated average volume of intravertebral bone cement from the 2 surgeons was 5.02±0.60ml, and the volume ratio of intravertebral bone cement to vertebral body was 0.19±0.03(range, 0.13-0.23). There was no significant difference between the real volume of intravertebal bone cement and estimated volume of intravertebral bone cement(P＞0.05)， moreover, there was no significant difference in the estimated volumes of intravertebral bone cement and vertebral body between 2 surgeons(P＞0.05). Conclusions: The Mimics software can be used for calculating the intravertebral bone cement accurately and estimating the ratio of intravertebral bone cement to vertebral body, which is of accuracy and reliability, and can be used for the further study. |
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