PMID- 23122220
OWN - NLM
STAT- MEDLINE
DCOM- 20130528
LR  - 20131121
IS  - 1873-2380 (Electronic)
IS  - 0021-9290 (Linking)
VI  - 46
IP  - 1
DP  - 2013 Jan 4
TI  - Ambulatory measurement of the knee adduction moment in patients with 
      osteoarthritis of the knee.
PG  - 43-9
LID - S0021-9290(12)00581-7 [pii]
LID - 10.1016/j.jbiomech.2012.09.030 [doi]
AB  - High knee joint-loading increases the risk and progression of knee osteoarthritis 
      (OA). Mechanical loading on the knee is reflected in the external knee adduction 
      moment (KAdM) that can be measured during gait with laboratory-based measurement 
      systems. However, clinical application of these systems is limited. Ambulatory 
      movement analysis systems, including instrumented force shoes (IFS) and an 
      inertial and magnetic measurement system (IMMS), could potentially be used to 
      determine the KAdM in a laboratory-free setting. Promising results have been 
      reported concerning the use of the IFS in KAdM measurements; however its 
      application in combination with IMMS has not been studied. The objective of this 
      study was to compare the KAdM measured with an ambulatory movement analysis 
      system with a laboratory-based system in patients with knee OA. Gait analyses of 
      14 knee OA patients were performed in a gait laboratory. The KAdM was 
      concurrently determined with two the systems: (i) Ambulatory: IFS and IMMS in 
      combination with a linked-segment model (to obtain joint positions); (ii) 
      Laboratory: force plate and optoelectronic marker system. Mean differences in 
      KAdM between the ambulatory and laboratory system were not significant (maximal 
      difference 0.20%BW*H in late stance, i.e. 5.6% of KAdM range, P>0.05) and below 
      clinical relevant and hypothesized differences, showing no systematic differences 
      at group level. Absolute differences were on average 24% of KAdM range, i.e. 
      0.83%BW*H, particularly in early and late stance. To achieve greater accuracy for 
      clinical use, estimation of joint position via a more advanced calibrated 
      linked-segment model should be investigated.
CI  - Copyright (c) 2012 Elsevier Ltd. All rights reserved.
FAU - van den Noort, Josien J C
AU  - van den Noort JJ
AD  - Department of Rehabilitation Medicine, Research Institute MOVE, VU University 
      Medical Center, 1007 MB Amsterdam, The Netherlands. j.c.vandennoort@gmail.com
FAU - van der Esch, Martin
AU  - van der Esch M
FAU - Steultjens, Martijn P M
AU  - Steultjens MP
FAU - Dekker, Joost
AU  - Dekker J
FAU - Schepers, Martin H M
AU  - Schepers MH
FAU - Veltink, Peter H
AU  - Veltink PH
FAU - Harlaar, Jaap
AU  - Harlaar J
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20121031
PL  - United States
TA  - J Biomech
JT  - Journal of biomechanics
JID - 0157375
SB  - IM
MH  - Aged
MH  - Biomechanical Phenomena
MH  - Female
MH  - Gait
MH  - Humans
MH  - Knee Joint/*physiopathology
MH  - Male
MH  - Middle Aged
MH  - Osteoarthritis, Knee/*physiopathology
MH  - Walking/*physiology
EDAT- 2012/11/06 06:00
MHDA- 2013/05/29 06:00
CRDT- 2012/11/06 06:00
PHST- 2012/03/19 00:00 [received]
PHST- 2012/09/27 00:00 [revised]
PHST- 2012/09/29 00:00 [accepted]
PHST- 2012/11/06 06:00 [entrez]
PHST- 2012/11/06 06:00 [pubmed]
PHST- 2013/05/29 06:00 [medline]
AID - S0021-9290(12)00581-7 [pii]
AID - 10.1016/j.jbiomech.2012.09.030 [doi]
PST - ppublish
SO  - J Biomech. 2013 Jan 4;46(1):43-9. doi: 10.1016/j.jbiomech.2012.09.030. Epub 2012 
      Oct 31.