alexa Survivorship analysis of 3234 primary knee arthroplasties implanted over a 26-year period: a study of eight different implant designs.


Journal of Osteoarthritis

Author(s): NR Pradhan, A Gambhir, ML Porter

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We conducted a survivorship analysis of 3234 primary total knee replacements performed at our hospital between 1969 and 1995. Each knee replacement was entered once only. Revision was defined as the end point. Data were collected both from patient records and by postal questionnaire. Eight types of knee prostheses were evaluated with best-case and worst-case scenarios compared over a 5-, 10- and 15-year period. The evidence suggests that the "Condylar type devices" which include the Total Condylar, Press Fit Condylar (PFC), Kinematic, Kinemax and Anatomic Modular Knee (AMK) have very similar survivorship curves and in the main have performed well up to a 10-year period. The LCS mobile bearing knee performed well at 5 years. The earlier design prostheses had a poor result in terms of survivorship and are hence were discontinued.

This article was published in Knee and referenced in Journal of Osteoarthritis

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