Article

Navigated total knee arthroplasty has been shown to increase accuracy
in post operative implant alignment. By contrast navigated total knee
arthroplasty has not shown significant functional improvements to date, when
compared with conventional surgery using subjective clinical questionnaire
scores. The aim of this study was to compare the knee joint kinematics measured
during functional activities using electrogoniometry 12 months after total knee
arthroplasty in randomised navigated and conventional total knee arthroplasty
groups. METHODS: The study design was a double blinded, randomised, prospective,
controlled trial. The patients were randomised into 2 surgical groups (n=102
navigated group, n=98 conventional group; mean age navigated=67,
conventional=67). Flexible electrogoniometry was used to measure patient's knee
kinematics with respect to time during 12 functional activities. FINDINGS: No
significant difference was found in terms of the maximum, minimum and excursion
knee joint angle during any of the functional activities. However there was a
statistically significant improvement in the level and slope gait cycle at the
pre swing phase in the navigated group. INTERPRETATION: There were minimal
functional improvements in the navigated total knee arthroplasty group 12 months
after surgery. However, these are unlikely to have a significant effect on daily
activity for the navigated group.
CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved.

Langue : ANGLAIS