J Korean Orthop Assoc.  2005 Aug;40(4):403-408.

Moderate to Severe Varus Deformity in Total Knee Arthroplasty: PFC Sigma Fixed Bearing Versus Rotating Platform

Affiliations
  • 1Department of Orthopedic Surgery, College of Medicine, Konkuk University, Chungju, Korea. kdkim@kku.ac.kr

Abstract

PURPOSE
To compare the performance of a fixed bearing with a PFC Sigma with that of a rotating platform in a total knee arthroplasty performed on patients with a moderate to severe varus deformity. MATERIALS AND METHODS: Among the patients who had received a total knee arthroplasty with either a PFC sigma fixed bearing or a rotating platform between October 1998 to June 2002, 77 cases (53 patients) with a > 15degrees varus deformity were examined. The surgery time and the clinical ratings and the radiographic images for each patient were investigated. RESULTS: There were no significant differences in the knee score, functional score, activity level, or radiological findings. There were seven cases where friction sounds were produced from the insertions in the rotating platform whilst walking and there were three cases of lateral instability. CONCLUSION: The PFC sigma fixed bearing was more effective for stabilizing the knees with a moderate to severe varus deformity because the rotating platform had a friction sound from the insertions while walking and lateral instability.

Keyword

Total knee arthroplasty; Varus deformity; Fixed bearing; Rotating platform

MeSH Terms

Arthroplasty*
Congenital Abnormalities*
Friction
Humans
Knee*
Walking
Full Text Links
  • JKOA
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr