Kinematic total knee arthroplasty: A 10- to 14-year prospective follow- up review

Frederick C. Ewald, R. John Wright, Robert Poss, William H. Thomas, Michael D. Mason, Clement B. Sledge

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

To understand better the type and incidence of long-term complications in total knee replacement, 306 primary Kinematic total knee arthroplasties performed between June 1978 and December 1982 were prospectively reviewed in detail. The Kinematic knee is a nonconstrained, posterior cruciate-retaining prosthesis that has right and left femoral components to afford anatomic tracking of the patella. The overall revision rate was 6.5%. The most common cause for revision surgery was patellar complications. Ten revisions (3.06%) were for patellar component loosening. Two knees were revised for patella subluxation (0.65%); 1 was in a resurfaced rheumatoid patella, and 1 in an unsurfaced osteoarthritic patella. Stair climbing was better with an unsurfaced patella. Anterior knee pain was 21.8% in the unsurfaced patella and 11.2% in the replaced patella. These data suggest patella replacement is not appropriate with this design.

Original languageEnglish
Pages (from-to)473-480
Number of pages8
JournalJournal of Arthroplasty
Volume14
Issue number4
DOIs
StatePublished - Jun 1999
Externally publishedYes

Keywords

  • Arthroplasty
  • Knee
  • Long-term complications

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