Backside wear in modern total knee designs
HSS Journal, ISSN: 1556-3316, Vol: 3, Issue: 1, Page: 30-34
2007
- 28Citations
- 36Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations28
- Citation Indexes27
- 27
- CrossRef19
- Patent Family Citations1
- Patent Families1
- Captures36
- Readers36
- 36
Article Description
Although modularity affords various options to the orthopedic surgeon, these benefits come at a price. The unintended bearing surface between the back surface of the tibial insert and the metallic tray results in micromotion leading to polyethylene wear debris. The objective of this study was to examine the backside wear of tibial inserts from three modern total knee designs with very different locking mechanisms: Insall-Burstein II® (IB II®), Optetrak®, and Advance®. A random sample of 71 inserts were obtained from our institution's retrieval collection and examined to assess the extent of wear, depth of wear, and wear damage modes. Patient records were also obtained to determine patient age, body mass index, length of implantation, and reason for revision. Modes of wear damage (abrasion, burnishing, scratching, delamination, third body debris, surface deformation, and pitting) were then scored in each zone from 0 to 3 (0 = 0%, 1 = 0-10%, 2 = 10-50%, and 3 = >50%). The depth of wear was subjectively identified as removal of manufacturing identification markings stamped onto the inferior surface of the polyethylene. Both Advance® and IB II® polyethylene inserts showed significantly higher scores for backside wear than the Optetrak® inserts. All IB II® and Advance® implants showed evidence of backside wear, whereas 17% (5 out of 30) of the retrieved Optetrak® implants had no observable wear. There were no significant differences when comparing the depth of wear score between designs. The locking mechanism greatly affects the propensity for wear and should be considered when choosing a knee implant system. © 2006 Springer Verlag.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=33846889008&origin=inward; http://dx.doi.org/10.1007/s11420-006-9033-0; http://www.ncbi.nlm.nih.gov/pubmed/18751767; https://journals.sagepub.com/doi/10.1007/s11420-006-9033-0; http://www.springerlink.com/index/10.1007/s11420-006-9033-0; http://www.springerlink.com/index/pdf/10.1007/s11420-006-9033-0; https://dx.doi.org/10.1007/s11420-006-9033-0
SAGE Publications
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