New approach for predictive measurement of knee cartilage defects with three-dimensional printing based on CT-arthrography: A feasibility study

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• 作者：R. Michalik^a ; ^{rmichalik@ukaachen.de} ; S. Schrading^b ; T. Dirrichs^b ; A. Prescher^c ; C.K. Kuhl^b ; M. Tingart^a ; B. Rath^a
• 关键词：3D-Printing ; Articular knee cartilage ; CT-Arthrography ; Cartilage defect ; Preoperative planning
• 刊名：Journal of Orthopaedics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：14
• 期：1
• 页码：95-103
• 全文大小：2209 K
• 卷排序：14

文摘

The aim was to prove the possibility of creating an exact module of knee cartilage defects using 3D printing.MethodsDefects 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.ResultsEstimated 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%.ConclusionsWe proved the feasibility of creating an accurate module of knee cartilage.