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A Two-Step Approach for 3D-Guided Patient-Specific Corrective Limb Osteotomies
Nick Assink1,2, Anne M L Meesters1,2, Kaj Ten Duis2
13D Lab, University Medical Centre Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands.
Journal of Personalized Medicine
|September 23, 2022
Summary
This study shows a new two-step technique for 3D-planned corrective osteotomies is accurate for treating long bone anomalies. The method reliably corrects angulation and rotation deformities with minimal deviation from the surgical plan.
Area of Science:
- Orthopedic surgery
- Biomedical engineering
- Medical imaging
Background:
- Corrective osteotomy for complex long bone anomalies presents significant challenges due to three-dimensional (3D) bone deformities.
- A novel two-step surgical approach combining a 3D-printed cutting and reposition guide with standard osteosynthesis plates was developed.
Purpose of the Study:
- To evaluate the accuracy of a two-step, 3D-planned corrective osteotomy technique for treating post-traumatic long bone malunions.
- To assess the reliability and feasibility of this patient-specific approach in achieving desired limb alignment.
Main Methods:
- Prospective inclusion of patients (≥12 years) undergoing two-step 3D-planned corrective osteotomy for post-traumatic malunion.
- Comparison of preoperative and postoperative 3D virtual models to quantify accuracy in angulation, rotation, and translation.
- Evaluation of deviations from the surgical plan in terms of achieved alignment.
Main Results:
- Ten patients were included, with all procedures completed successfully without complications.
- Preoperative angular and rotational deformities ranged significantly, indicating complex cases were addressed.
- Achieved alignment showed an average deviation of 2.1° for angulation and 3.4° for rotation from the planned correction.
Conclusions:
- The two-step approach for 3D-guided patient-specific corrective osteotomies is a reliable and feasible surgical method.
- This technique demonstrates high accuracy in correcting complex long bone deformities, offering a promising solution for post-traumatic malunions.
