ArticleFrontiers in sports and active living2026
Elasticity mapping of gastrocnemius fascia and myotendinous junction of the medial gastrocnemius during passive ankle and knee dorsiflexion.
Article in Frontiers in sports and active living, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and purpose: Muscle strain is a common side-effect of exercise. In this context, many scholars have focused primarily on the biological characteristics of the muscle, generally overlooking the importance of myofascial elasticity. Therefore, the aims of the present study were: (1) to evaluate the intra- and inter-operator reliability of elasticity measurements in the myofascial and myotendinous junction (MTJ) using ultrasound shear wave elastography (USWE); (2) to establish the association between myofascial elasticity and passive joint angles. Methods: Twenty-one healthy and physically active adults participated in this study. The elasticity of the medial gastrocnemius muscle fascia (MGF), lateral gastrocnemius muscle fascia (LGF), and MTJ were quantified at different angles using USWE. Results: USWE demonstrated excellent intra-operator (ICC = 0.893-0.980) and inter-operator (ICC = 0.907-0.981) reliability for quantifying the elastic modulus of the gastrocnemius fasciae and MTJ. The elasticity of these structures was significantly influenced by joint angles: it decreased with knee flexion and increased with ankle dorsiflexion ( Conclusions: This study confirms the high reliability of USWE for assessing myofascial elasticity and reveals its dynamic regulation by joint posture. The findings provide crucial imaging-based biomechanical evidence that enhances the understanding of myofascial mechanics
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