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. 2014 Jun;29(6):1197-201.
doi: 10.1016/j.arth.2013.11.018. Epub 2013 Dec 2.

Survival of primary condylar-constrained total knee arthroplasty at a minimum of 7 years

Lance M Maynard  1 , Timothy J Sauber  1 , Vasileios K Kostopoulos  1 , Gregory S Lavigne  1 , Jeffrey J Sewecke  1 , Nicholas G Sotereanos  1
Affiliations

Survival of primary condylar-constrained total knee arthroplasty at a minimum of 7 years

Lance M Maynard et al. J Arthroplasty. 2014 Jun.

Abstract

The purpose of the present study is to retrospectively analyze clinical and radiographic outcomes in primary constrained condylar knee arthroplasty at a minimum follow-up of 7 years. Given the concern for early aseptic loosening in constrained implants, we focused on this outcome. Our cohort consists of 127 constrained condylar knees. The mean age of patients in the study was 68.3 years, with a mean follow-up of 110.7 months. The diagnosis was primary osteoarthritis in 92%. There were four periprosthetic distal femur fractures, with a rate of revision of 0.8%. No implants were revised for aseptic loosening. Kaplan-Meier survivorship analysis with removal of any component as the end point revealed that the 10-year rate of survival of the primary CCK was 97.6% (95% CI, 94%-100%).

Keywords: constrained condylar knee; osteoarthritis; total knee arthroplasty.

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