R Michalik1, S Schrading2, T Dirrichs2, A Prescher3, C K Kuhl2, M Tingart1, B Rath1. 1. Department of Orthopaedic Surgery, University Hospital RWTH Aachen, Aachen, Germany. 2. Department of Diagnostic and Interventional Radiology, University Hospital RWTH Aachen, Aachen, Germany. 3. Institute of Molecular and Cellular Anatomy, University RWTH Aachen, Aachen, Germany.
Abstract
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.
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.
Authors: F Rengier; A Mehndiratta; H von Tengg-Kobligk; C M Zechmann; R Unterhinninghofen; H-U Kauczor; F L Giesel Journal: Int J Comput Assist Radiol Surg Date: 2010-05-15 Impact factor: 2.924
Authors: H Upmeier; B Brüggenjürgen; A Weiler; C Flamme; H Laprell; S N Willich Journal: Knee Surg Sports Traumatol Arthrosc Date: 2006-12-06 Impact factor: 4.342
Authors: J A Gagliardi; E M Chung; V P Chandnani; K L Kesling; K P Christensen; R N Null; M G Radvany; M F Hansen Journal: AJR Am J Roentgenol Date: 1994-09 Impact factor: 3.959
Authors: Kai Mithoefer; Daniel B F Saris; Jack Farr; Elizaveta Kon; Kenneth Zaslav; Brian J Cole; Jonas Ranstam; Jian Yao; Matthew Shive; David Levine; Wilfried Dalemans; Mats Brittberg Journal: Cartilage Date: 2011-04 Impact factor: 4.634
Authors: Bashir Zikria; Nima Hafezi-Nejad; Ian Patten; Alex Johnson; Arya Haj-Mirzaian; John H Wilckens; James R Ficke; Shadpour Demehri Journal: JB JS Open Access Date: 2019-05-29