Quantify osteoarthritis gait at the doctor’s office: a simple pelvis accelerometer based method independent from footwear and aging
Résumé
The gold standard to evaluate the severity of steoarthritis in
the doctor’s office remains clinical scores (Bellamy 2002). The
Western Ontario and McMaster Universities (WOMAC) oste-
oarthritis index is the most largely used score in rheumatology
for lower limb osteoarthritis. It is based on clinical observation
and it assesses pain, stiffness, and physical function in patients
with hip and knee osteoarthritis. It is valid, reliable, and sen-
sitive to evaluate osteoarthritis and adapted to doctor’s office
(Bellamy 2002).
However, clinical scores are inherently subjective and they
depend from the patient’s impression and from the clinician’s
interpretation. Gait analysis in modern gait laboratories with
force plates and photogrammetry is a good tool to have an objec-
tive, quantified, and precise insight in osteoarthritis (Astephen
et al. 2008).
For practical reasons, skin-mounted inertial sensors are well
suited for investigating gait kinematics (Auvinet et al. 2002). In
accelerometer-based gait analysis, aging is also known to affect
gait parameters (Oberg et al. 1993). To have a clinical measure of
osteoarthritis, it is essential to find a technique that is independ-
ent from aging. Footwear can also affect walking parameters
(Chambon et al. 2014). Since it is too time consuming to ask the
patient to take off his shoe for the measurement, it is essential to
find a method independent from the shoe type.
Walking ten meters go and ten meters back on a level sur-
face at comfortable walking speed is a well-suited protocol for
clinical situations.
This study proposes to test a 3D pelvis accelerometer-based
measurement method on a group of 47 patients suffering from
lower limb osteoarthritis and 12 asymptomatic subjects. The aim
was to see whether the ccelerometer-based method is correlated
with the clinical severity of the lower limb osteoarthritis evalu-
ated with the WOMAC index. In addition, this study valuates
whether the accelerometer-based method is independent of
aging on 75 asymptomatic subjects and whether the acceler-
ometer-based method is independent from footwear on one
asymptomatic subject.
Domaines
Sciences du Vivant [q-bio]
Origine : Fichiers produits par l'(les) auteur(s)
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