Introduction: Isolated patellofemoral osteoarthritis can be treated with patellofemoral arthroplasty.
Case Presentation: We present two cases of isolated patellofemoral osteoarthritis treated with Low Contact Stress patellofemoral arthroplasty; in both cases the polyethylene mobile-bearing of the patellar component dissociated from the metal backing. One patient had a revision to a Richards patellofemoral prosthesis, and in the second patient the arthroplasty was converted to a total knee prosthesis because of clinically important femorotibial osteoarthritis.
Conclusion: The possible failure mechanisms are described. We suggest avoiding the use of a metal-backed mobile-bearing patellar component due to the risk of dissociation.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2740181 | PMC |
| http://dx.doi.org/10.1186/1757-1626-2-7502 | DOI Listing |
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