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Vet Pathol. 2015 Sep;52(5):842-50. doi: 10.1177/0300985815593124. Epub 2015 Jul 10.

Animal Models for Evaluation of Bone Implants and Devices: Comparative Bone Structure and Common Model Uses.

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Biocompatibility, NAMSA, Northwood, OH, USA


Bone implants and devices are a rapidly growing field within biomedical research, and implants have the potential to significantly improve human and animal health. Animal models play a key role in initial product development and are important components of nonclinical data included in applications for regulatory approval. Pathologists are increasingly being asked to evaluate these models at the initial developmental and nonclinical biocompatibility testing stages, and it is important to understand the relative merits and deficiencies of various species when evaluating a new material or device. This article summarizes characteristics of the most commonly used species in studies of bone implant materials, including detailed information about the relevance of a particular model to human bone physiology and pathology. Species reviewed include mice, rats, rabbits, guinea pigs, dogs, sheep, goats, and nonhuman primates. Ultimately, a comprehensive understanding of the benefits and limitations of different model species will aid in rigorously evaluating a novel bone implant material or device.


animal models; biocompatibility; bone implants; bone remodeling; dental implants; medical device; peri-implantitis; safety assessment

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