Article

In many cases knee osteoarthritis leads to total knee replacement surgery (TKR)
even if the lateral compartment is not involved. More recently, a bicompartmental
knee replacement system (BKR) (Journey Deuce, Smith & Nephew Inc., Memphis, TN,
USA) has been developed that only replaces the medial tibiofemoral and the
patellofemoral compartments, thus preserving both cruciate ligaments with its
associated benefits. However information on the effect of BKR on in vivo knee
joint kinematics is not widely available in the literature. Therefore, this study
analyzed full three-dimensional knee joint kinematics in 10 postoperative
BKR-subjects for a broad spectrum of relevant daily life activities: walking,
walking followed by a cross-over or sidestep turn, step ascent and descent, mild
squatting and chair rise. We analyzed to what extent normal knee motion is
regained through comparison with their non-involved limb as well as a group of
matched controls. Furthermore, coefficients of multiple correlation were
calculated to assess the consistency of knee joint kinematics both within and
between subject groups. This analysis demonstrated that, despite the presence of
differences indicative for retention of pre-operative motion patterns and/or
remaining compensations, knee joint kinematics in BKR limbs replicate, for a
large range of daily-life motor tasks, the kinematics of the contra-lateral
non-affected limbs and healthy controls to a similar extent as they are
replicated within both these control groups.
CI - Copyright (c) 2012 Elsevier B.V. All rights reserved.

Langue : ANGLAIS