Ligaments Scientific Publications

Latest publication 08/18/2017

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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The advanced version of our Dynamic Weight Bearing Test for rodents (rats and mice) allows for faster paw identification, based on a video solution taking advantage of the most advanced algorithms of morphologic analysis, weight distribution and postural changes in dynamic conditions. An efficient and advanced alternative to traditional incapacitance tests (i.e. the paw pressure test or the force plate test) for assessing pain sensitivity in your research on analgesia, hyperalgesia and nociception involving rats and mice, including work on osteoarthritis, bone cancer, analgesic substances, Parkinson disease, allodynia...

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BIOSEB’s renowned Dynamic Weight Bearing (DWB2) system is now more powerful than ever with the addition of the Postural Module. This optional software upgrade extends standard weight-bearing analysis by integrating unique calculations designed to quantify subtle aspects of postural balance, locomotor patterns, and compensatory behaviors.
Developed in collaboration with Dr. Tighilet’s lab from Aix Marseille Université-CNRS, the Postural Module improves your DWB2, providing valuable endpoints for studies on pain, neurology, vestibular dysfunction, and neurodegenerative disorders.

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