RT Journal Article
SR Electronic
T1 Retrieval analysis of motion preserving spinal devices and periprosthetic tissues
JF International Journal of Spine Surgery
JO Int J Spine Surg
FD International Society for the Advancement of Spine Surgery
SP 161
OP 177
DO 10.1016/j.esas.2009.11.003
VO 3
IS 4
A1 Steven M. Kurtz
A1 Marla Steinbeck
A1 Allyson Ianuzzi
A1 André van Ooij
A1 Ilona M. Punt
A1 Jorge Isaza
A1 E.R.S. Ross
YR 2009
UL http://ijssurgery.com//content/3/4/161.abstract
AB This article reviews certain practical aspects of retrieval analysis for motion preserving spinal implants and periprosthetic tissues as an essential component of the overall revision strategy for these implants. At our institution, we established an international repository for motion-preserving spine implants in 2004. Our repository is currently open to all spine surgeons, and is intended to be inclusive of all cervical and lumbar implant designs such as artificial discs and posterior dynamic stabilization devices. Although a wide range of alternative materials is being investigated for nonfusion spine implants, many of the examples in this review are drawn from our existing repository of metal-on-polyethylene, metal-on-metal lumbar total disc replacements (TDRs), and polyurethane-based dynamic motion preservation devices. These devices are already approved or nearing approval for use in the United States, and hence are the most clinically relevant at the present time. This article summarizes the current literature on the retrieval analysis of these implants and concludes with recommendations for the development of new test methods that are based on the current state of knowledge of in vivo wear and damage mechanisms. Furthermore, the relevance and need to evaluate the surrounding tissue to obtain a complete understanding of the biological reaction to implant component corrosion and wear is reviewed.