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New approach for predictive measurement of knee cartilage defects with three-dimensional printing based on
R Michalik1, S Schrading2, T Dirrichs2
1Department of Orthopaedic Surgery, University Hospital RWTH Aachen, Aachen, Germany.
Purpose:
The aim was to prove the possibility of creating an exact module of knee cartilage defects using 3D printing.
Methods:
Defects were created in cadaver knees. CT-arthrography and 3-Tesla MRI were performed. Based on CTA images a model of the cartilage was created using 3D printing. Defect-sizes in the imaging modalities were compared.
Results:
Estimated lesion area in 3D model differed approximately 5% comparing to the defect sizes in knees. MRI underestimated the defect on average of 12%, whereas the CTA overestimated the defect about 3%.
Conclusions:
We proved the feasibility of creating an accurate module of knee cartilage.
