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Clinical Retrieval and Simulator Comparison of an Investigational Cervical Disc Replacement: An a Priori Requirement by Paul D. Postak, Christine S. Heim,

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Presentation on theme: "Clinical Retrieval and Simulator Comparison of an Investigational Cervical Disc Replacement: An a Priori Requirement by Paul D. Postak, Christine S. Heim,"— Presentation transcript:

1 Clinical Retrieval and Simulator Comparison of an Investigational Cervical Disc Replacement: An a Priori Requirement by Paul D. Postak, Christine S. Heim, Edward A. Morra, and A. Seth Greenwald J Bone Joint Surg Am Volume 92(Supplement 2):68-73 December 1, 2010 ©2010 by The Journal of Bone and Joint Surgery, Inc.

2 Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73 ©2010 by The Journal of Bone and Joint Surgery, Inc.

3 Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73 ©2010 by The Journal of Bone and Joint Surgery, Inc.

4 Cervical disc simulator motion profile demonstrating extensive lateral spinal bending and axial rotation but no flexion. Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73 ©2010 by The Journal of Bone and Joint Surgery, Inc.

5 Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73 ©2010 by The Journal of Bone and Joint Surgery, Inc.

6 Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73 ©2010 by The Journal of Bone and Joint Surgery, Inc.

7 Volumetric wear rate of the ultra-high molecular weight polyethylene (UHMWPE) convex (caudal) surfaces of the five PCM cervical disc prostheses that underwent simulated wear. Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73 ©2010 by The Journal of Bone and Joint Surgery, Inc.

8 Volumetric wear rate of the cobalt chromium molybdenum (CoCrMo) concave (cephalic) surfaces of the five PCM cervical disc prostheses that underwent simulated wear. Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73 ©2010 by The Journal of Bone and Joint Surgery, Inc.

9 Photograph of a retrieved PCM disc replacement, demonstrating surface polishing (arrow) of the ultra-high molecular weight polyethylene convex (caudal) surface; this damage pattern was similar to that seen in the simulator components. Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73 ©2010 by The Journal of Bone and Joint Surgery, Inc.

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