Ligaments - Publications Scientifiques

Dernière publication 18/08/2017

Dynamic weight bearing analysis is effective for evaluation of tendinopathy usin

Few studies discuss kinetic changes in tendinopathy models. We propose a customized corridor to evaluate dynamic weight bearing (DWB) and shearing...

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    [title] => Dynamic weight bearing analysis is effective for evaluation of tendinopathy usin
    [paragraph] => Dynamic weight bearing analysis is effective for evaluation of tendinopathy using a customized corridor with multi-directional force sensors in a rat model
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Authors
PT, Wu, CH. Hsu, FC. Su, IM Jou, SY. Chen, CL. Wu, WR. Su, LC. Kuo

 Lab
Department of Orthopedics, College of Medicine, National Cheng Kung University, Tainan, Taiwan
Journal
Scientific Reports
Abstract
Few studies discuss kinetic changes in tendinopathy models. We propose a customized corridor to evaluate dynamic weight bearing (DWB) and shearing forces. Sixty rats were randomly given ultrasound-assisted collagenase injections (Collagenase rats) or needle punctures (Control rats) in their left Achilles tendons, and then evaluated 1, 4, and 8 weeks later. The Collagenase rats always had significantly (p < 0.001) higher histopathological and ultrasound feature scores than did the Controls, significantly lower DWB values in the injured than in the right hindlimbs, and compensatorily higher (p < 0.05) DWB values in the contralateral than in the left forelimbs. The injured hindlimbs had lower outward shearing force 1 and 4 weeks later, and higher (p < 0.05) push-off shearing force 8 weeks later, than did the contralateral hindlimbs. Injured Control rat hindlimbs had lower DWB values than did the contralateral only at week 1. The Collagenase rats had only lower static weight bearing ratios (SWBRs) values than did the Controls at week 1 (p < 0.05). Our customized corridor showed changes in DWB compatible with histopathological and ultrasound feature changes in the rat tendinopathy model. The hindlimb SWBRs did not correspond with any tendinopathic changes.
BIOSEB Instruments Used
Dynamic Weight Bearing 2.0 (BIO-DWB-DUAL)
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Un système permettant l'analyse de la posture des animaux par la répartition du poids sur chacune des 4 pattes. Le DWB est un test unique dans l'étude de nombreux modèles de douleurs, principalement non évoquée , neuropathique ou encore inflammatoire ainsi que pour les études sur l'osthéoarthrite et divers affections du SNC. 

Le nouvelle version DWB2 intègre une nouvelle interface logiciel plus simple avec gestion des listes d'animaux ainsi que de nouveaux algorithmes d'analyse automatique de la posture.

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Développé en collaboration avec le laboratoire du Dr. Tighilet de l’Université Aix-Marseille - CNRS, le Module Postural améliore votre DWB2 en fournissant des paramètres précieux pour les recherches sur la douleur, les troubles vestibulaires et les maladies neurodégénératives.

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