Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (43): 7987-7990.doi: 10.3969/j.issn.1673-8225.2011.43.002

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Virtual operation planning in orthopedic surgery for acetabular fractures based on real CT data

Wang Guang-ye1, Zhang Chun-cai2, Xu Shuo-gui2, Xue Shuang-tao1, Lin Qing-gao1   

  1. 1Department of Orthopedics, Wuhu Second People’s Hospital, Wuhu  241000, Anhui Province, China
    2Department of Orthopedics, Changhai Hospital, Second Military Medical University of Chinese PLA, Shanghai  200433, China
  • Received:2011-07-04 Revised:2011-09-09 Online:2011-10-22 Published:2011-10-22
  • About author:Wang Guang-ye☆, Doctor, Associate chief physician, Department of Orthopedics, Wuhu Second People’s Hospital, Wuhu 241000, Anhui Province, China wangguangye@126.com
  • Supported by:

    the Science and Technology Research Project of Shanghai Science and Technology Committee, No. 03JC140087*

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Abstract:

BACKGROUND: Virtual operation planning can help surgeons to improve the accuracy of orthopedic operations.
OBJECTIVE:To test the feasibility and clinical value of preoperative virtual surgical planning in pelvis and acetabular fractures using Mimics software based on an interactive virtual reality-style environment.
METHODS: Thirteen patients with pelvis and acetabular fractures were scanned with spiral CT preoperatively. The real data from CT in DICOM format were transformed into Mimics software. With segmentation process, each fracture segment became a separate object. Bone fragments could be moved and rotated in all three planes and reduction was performed. Then we performed all the steps of the surgical procedure.
RESULTS AND CONCLUSION: The median time needed to segment the osseous parts of an entire pelvis and to extract a surface model was 45 minutes (ranging 30 to 70 minutes), and the median time for fracture reduction was 28 minutes (ranging 16 to 45 minutes). The planned approach was followed in 12 of the 13 cases, the planned fixation was followed completely in 12 cases and partially in 1 cases. The screw count was identical to the planned operation in 10 cases, the screw length was identical in 8 cases, and fixation plate count was identical in 11 cases. Postoperative congruence of the acetabular joint surface as determined according to Matta in the follow-up CT was anatomic in 6 cases (46%) and satisfactory in 7 cases (54%). There was no case with inadvertent penetration of the hip joint. Virtual operation planning in orthopedic surgery is helpful for enacting accurate operation program and providing data reference for actual operation, which brings significant value and new opportunities in clinical practice.

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