Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Knee
Abstract number: 23152
RPF HIGH-FLEXION KNEE DESIGN: SAFETY AND EFFICACY
Chitranjan RANAWAT, Morteza MEFTAH
Hospital for Special Surgery, New York (UNITED STATES)
Background: Implants designed for enhanced flexion offer the prospect of improved
function after total knee replacement (TKR), but there exists little published data
regarding the level of function that can realistically be anticipated. Methods: Eightythree
patients (100 knees) were prospectively followed for one year after TKR with a
rotating-platform posterior-stabilized high-flexion prosthesis. A questionnaire
evaluated function in high-demand and high-flexion activities. Knee Society scores
were obtained and range-of-motion was measured. Results: Whereas 63% of
patients reported no limitation in their ability to perform high-demand activities, 22%
reported significant limitation. Twenty percent could neither kneel, nor squat, nor sit
on their heels. Mean Knee Society Score was 95 and mean range-of-motion was 125
degrees. Interestingly, function in high flexion did not correlate with knee flexion
angle or KSS score. Conclusions: Results two year after total knee replacement with
a rotating-platform posterior-stabilized high-flexion prosthesis are encouraging, but 1
in 5 patients remain significantly limited in high demand and high-flexion activities.
122