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Novel Positioning Feedback System as a Guidance in Bone Tumor Resection
Vamiq M Mustahsan1, Guangyu He1, Carlos G Helguero2
1Department of Mechanical Engineering, 189653Stony Brook University, Stony Brook, NY, USA.
Surgical Innovation
|June 6, 2022
Summary
An inexpensive optical feedback system (OFS) improves the accuracy of bone resections using 3D-printed guides. This system reduces surgical errors by comparing real-time images to pre-operative plans, enhancing precision in bone cutting.
Area of Science:
- Orthopedic Surgery
- Medical Imaging
- Biomedical Engineering
Background:
- 3D-printed guides enhance bone resection accuracy but still have errors.
- Current methods lack precise intraoperative feedback for guide placement.
Purpose of the Study:
- To develop and validate an inexpensive optical feedback system (OFS) for improving 3D-printed guide accuracy in bone resections.
- To assess the OFS's ability to reduce clinically significant errors in surgical bone cutting.
Main Methods:
- Developed an optical feedback system (OFS) comparing intraoperative 2D camera images to pre-operative plans.
- Simulated bone resections on 24 cadaver femurs and 20 sawbones, measuring guide placement accuracy with OFS and CT scans.
- Compared final bone cut accuracy with and without active OFS use.
Main Results:
- OFS accurately depicted guide placement in transverse and sagittal planes (e.g., 0.87° ± 0.65° accuracy in transverse plane).
- OFS use significantly increased final bone cut accuracy by 33-54.7% in rotation and translation.
- OFS demonstrated high correlation between recorded and actual guide positions (r = .94 and r = .81).
Conclusions:
- The OFS accurately depicts 3D-printed guide placement on bone.
- This system significantly improves surgical accuracy for bone resections using 3D-printed guides.
- Future development aims for a mobile application to enhance OFS accessibility and reduce processing time.
