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Thoracolumbar imbalance analysis for osteotomy planification using a new method: FBI technique
J C Le Huec1, P Leijssen, M Duarte
1Spine Unit 2, Surgical Research Lab, Bordeaux University Hospital, CHU Pellegrin, 33076, Bordeaux, France. j-c.lehuec@u-bordeaux2.fr
Summary
A new FBI technique aids spine imbalance surgery by analyzing pelvic and spine parameters for precise osteotomy planning. This method improves surgical outcomes and spinal alignment, offering a valuable tool for surgeons.
Area of Science:
- Spine surgery
- Orthopedics
- Biomechanical analysis
Background:
- Posterior osteotomy is crucial for treating spine imbalance and restoring sagittal alignment.
- Current preoperative planning methods for spinal osteotomy are often inadequate.
- Analyzing pelvic parameters is vital for accurate spine reconstruction.
Purpose of the Study:
- To introduce a novel preoperative planning method for posterior osteotomy in spine imbalance.
- To enhance the accuracy of osteotomy planning by incorporating pelvic and spine parameters.
- To improve surgical outcomes and spinal alignment restoration.
Main Methods:
- A full-body X-ray is used, including the spine (C1-femoral head) and femur shaft.
- The FBI (Full Body Imaging) formula is proposed, integrating pelvic and spine parameters based on Roussouly's classification.
- Osteotomy angle is calculated using goniometry with three reference points (C7, S1, L4), incorporating femur angulation and compensatory pelvic tilt.
Main Results:
- Retrospective analysis of 18 patients identified reasons for improper corrections.
- Prospective application in 8 patients yielded good clinical outcomes and correct spinal alignment.
- The technique demonstrated effectiveness in evaluating the necessary correction amount.
Conclusions:
- The FBI technique provides a reliable method for evaluating the required correction in spine imbalance.
- It aids surgeons in selecting appropriate techniques for achieving optimal spinal balance.
- The method is applicable even for restoring small lordosis, improving surgical precision.
