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 AmVolume 92(Supplement 2):68-73

December 1, 2010

©2010 by The Journal of Bone and Joint Surgery, Inc.

Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73

©2010 by The Journal of Bone and Joint Surgery, Inc.

Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73

©2010 by The Journal of Bone and Joint Surgery, Inc.

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.

Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73

©2010 by The Journal of Bone and Joint Surgery, Inc.

Paul D. Postak et al. J Bone Joint Surg Am 2010;92:68-73

©2010 by The Journal of Bone and Joint Surgery, Inc.

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.

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.

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.