Analysis of thigh muscle stiffness from childhood to adulthood using magnetic resonance elastography (MRE) technique

Characterization of muscle architecture in children and adults using magnetic resonance elastography and ultrasound techniques

“…Indeed, we have previously characterized the VM stiffnesses of young adults (20-30 yr) (Debernard et al, 2010) and a gradually increase (about 2-3 kPa) of the shear modulus was measured from the rest to the contracted (10% and 20% MVC) conditions due to tenser fascicles, and not to a change in fiber orientation which stays approximately the same (variation of 11) at 10% and 20% MVC. We also have previously demonstrated (Debernard et al, 2010) that at 10% MVC children have already reached their maximal stiffness, which may be explained by the high increase of fascicle angle (about 101) demonstrating the on-going structural organization of the muscle, leading to a random and uncontrolled fibers recruitment. Shear modulus measured at different locations within the VM muscle revealed that adult muscle tissue is composed of a less homogeneous media compared to children's due to the on-going growing process.…”

Feasibility and Reliability of Quantifying Passive Muscle Stiffness in Young Children by Using Shear Wave Ultrasound Elastography

“…5 However, use of this technique for routine clinic care is not practical because of the cost and accessibility of magnetic resonance imaging.…”

Adjustability and Adaptability Are Critical Characteristics of Pediatric Support Surfaces

“…The endomysium (intramuscular connective tissues) of infants and children is thinner, making their relaxed skeletal muscles significantly softer than those of adults. 14,15 Skin tissue is another example of the immense differences between infants and adults in the context of the risk for PUs. First, the thickness of skin tissues in children younger than 5 years of age is lower compared with adults and closer to that of a senior, older than 75 years.…”