Non-uniform displacements within the Achilles tendon observed during passive and eccentric loading
نویسندگان
چکیده
منابع مشابه
Understanding Achilles Tendinopathy and Tendon Rehabilitation through the Achilles Tendon Diametral Strain Response to Eccentric Exercise
We have previously demonstrated that eccentric exercise results in an immediate decrease in tendon thickness in healthy young adults [3]. Based on in vitro evidence, it was proposed that the marked diametral strain response (≈ 20%) observed in vivo primarily reflected the radial extrusion of fluid from the tendon [4, 5]. Such convective fluid movement likely plays a vital role in tendon homeost...
متن کاملAchilles and Patellar Tendon Loading during Gait Measured Using a Non-invasive Ultrasonic Technique
INTRODUCTION In vivo measurement of tendon and ligament loads remains a challenge. Forces acting on these structures during exercise have been either estimated indirectly using EMG and inverse dynamics or measured by means of invasive techniques [2]. Recently, a non-invasive technique has been proposed, based on the measurement of the velocity of ultrasound (US) propagation in the tendon [1]. I...
متن کاملBiomechanical characteristics of the eccentric Achilles tendon exercise.
BACKGROUND Eccentric exercise has been shown to provide good short-term clinical results in the treatment of painful mid-portion chronic Achilles tendinopathies. However, the mechanisms behind the positive effects of eccentric rehabilitation regimes are not known, and research into the biomechanics of the exercise may improve our understanding. METHODS Sixteen healthy subjects performed one-l...
متن کاملEccentric loading for Achilles tendinopathy--strengthening or stretching?
The prescription of eccentric loading is considered as a mainstay of non-operative rehabilitation programmes for mid-substance chronic Achilles tendinopathy. Such exercises have some degree of clinical utility in comparison with concentric training and are often referred to as a strengthening programme. Yet the dose parameters of the eccentric loading do not reflect an optimal strengthening pro...
متن کاملRat Achilles tendon healing: mechanical loading and gene expression.
Injured tendons require mechanical tension for optimal healing, but it is unclear which genes are upregulated and responsible for this effect. We unloaded one Achilles tendon in rats by Botox injections in the calf muscles. The tendon was then transected and left to heal. We studied mechanical properties of the tendon calluses, as well as mRNA expression, and compared them with loaded controls....
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ژورنال
عنوان ژورنال: Journal of Biomechanics
سال: 2014
ISSN: 0021-9290
DOI: 10.1016/j.jbiomech.2014.07.032