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3-D Spine Models Useful When Planning and Performing Surgery
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Posted on: 12/20/2007
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In this study, researchers show the benefits of using 3-D models of complex pelvic and spinal deformities. The models were used when planning and performing surgery. In some cases, surgery was cancelled because of the information provided by the model.
CT scans were used to construct these rapid prototype (RP) models. A virtual model was created first using computer data. Once the surgeon approved the model, the 3-D version was made. Surgeons used the model to plan the placement of screws and other implants. Rehearsing the steps was possible. Accuracy was improved.
The models were useful when showing patients and family members what would be done during the operation. The surgeon kept the model close by during the procedure. This helped him or her visualize pathways for instruments. The time needed for the surgery was less with fewer errors when RP models were available.
After using the models to perform surgery, the surgeons filled out a survey and answered the researchers' questions. From the information gathered, it was decided that opaque models showed the inner portion of the spine better. Semi-transparent models gave a clearer view of the surface anatomy.
All surgeons using the RP model reported it was useful in planning procedures involving the spine and/or pelvis. More than two-thirds said it was highly beneficial. Future use of RP models may improve the safety of surgery as well. These models are only available in an academic setting at this time. Studies such as this one to document the benefits may result in commercially available models for use by all surgeons.
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References:
Joe Guarino, PhD, et al. Rapid Prototyping Technology for Surgeries of the Pediatric Spine and Pelvis. Benefits Analysis. In Journal of Pediatric Orthopaedics. December 2007. Vol. 27. No. 8. Pp. 955-960.
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