2-year follow-up report on micromotion of a short tibia stem. A prospective, randomized RSA study of 59 patients.

ABSTRACT:

Background and purpose

A shortened tibial stem could influence the early prosthetic fixation. We therefore compared the short stem to the standard-length stem using radiostereometric analysis (RSA) as primary outcome measure.

Patients and methods

60 patients were randomized to receive a cemented Triathlon total knee arthroplasty (TKA) with a tibial tray of either standard or short stem length. The patients were blinded regarding treatment allocation. The micromotion of the tibial component was measured by RSA postoperatively, at 3 months, and after 1 and 2 years; clinical outcome was measured with the American Knee Society score (AKSS) and the knee osteoarthritis and injury outcome score (KOOS).

Results

The maximum total point motion (MTPM) for the standard stem was 0

SUBMITTER: Molt M 

PROVIDER: S-EPMC4564782 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature