BACKGROUND After ligament reconstruction, mechanical deterioration of the grafted tendon is observed with revascularization and cellular infiltration. However, the effect of cellular infiltration on the mechanical properties of the tendon matrix has not been fully understood. METHODS Cultured fibroblasts derived from the rabbit patellar tendon were seeded around an acellular rabbit patellar t...

BACKGROUND Children with spastic cerebral palsy (CP) experience secondary musculoskeletal adaptations, affecting the mechanical and material properties of muscles and tendons. CP-related changes in the spastic muscle are well documented whilst less is known about the tendon. From a clinical perspective, it is important to understand alterations in tendon properties in order to tailor interventi...

The present study aimed to determine whether distinct sets of tendon properties are seen in athletes engaged in sports with contrasting requirements for tendon function and structural integrity. Patellar and Achilles tendon morphology and force-deformation relation were measured by combining ultrasonography, electromyography and dynamometry in elite ski jumpers, distance runners, water polo pla...

Freehand three-dimensional ultrasound (3DUS) was used to investigate longitudinal and biaxial transverse deformation and rotation of the free Achilles tendon in vivo during a voluntary submaximal isometric muscle contraction. Participants (n = 8) were scanned at rest and during a 70% maximal voluntary isometric contraction (MVIC) of the plantarflexors. Ultrasound images were manually digitized ...

Introduction: Posterior tibial tendon reconstruction frequently involves transfer of the flexor digitorum longus (FDL) tendon to the navicular and debridement of the diseased portion of the posterior tibial tendon as well as a calcaneal osteotomy and possibly a lateral column lengthening. If the posterior tibial tendon muscle appears to have some contractile property then it is anastamosed to t...

Neuromusculoskeletal models are a common method to estimate muscle forces. Developing accurate neuromusculoskeletal models is a challenging task due to the complexity of the system and large inter-subject variability. The estimation of muscles force is based on the mechanical properties of tendon-aponeurosis complex. Most neuromusculoskeletal models use a generic definition of the tendon-aponeu...

Snapping of the biceps femoris tendon over the fibular head is an uncommon condition. Reported causes include an anomalous insertion of the tendon, trauma at the insertion site of the tendon, and an abnormality of the fibular head. This article reports a case of a painful snapping biceps femoris tendon in a patient without an anomalous tendon insertion or an abnormality of the fibular head. Par...

INTRODUCTION Ultrasound imaging is increasingly used with motion and force data to quantify tendon dynamics and to understand the functional role of tendons during human and other animal movement. Frequently, tendon dynamics are estimated indirectly from measures of muscle kinematics (by subtracting muscle length from muscle-tendon unit length), but there is mounting evidence that this approach...

Objectives- The purpose of the study was to observe whether PRP, Mesenchymal Stem Cells (MSCs) and combining them could help make improvements the healing of Achilles tendons in rabbits. Design- Experimental study. Animals-Sixteen male, healthy and mature white New Zealand rabbits. Procedures- The animals were...