Abstract
Ultrasound has emerged as a fundamental tool to investigate the biomechanics of muscles and tendons during locomotion. Ultrasound can directly and non-invasively assess neuromuscular activity in vivo and can thus inform researchers how muscles and tendons interact during a wide variety of functional tasks such as walking. For example, loading from the triceps surae muscles (i.e., calf muscles) interacts through distinct fascicles within the Achilles tendon, which can give rise to unique biomechanical behavior detectable via ultrasound. This presentation will discuss how we have used ultrasound to monitor kinematics and material properties of the Achilles tendon during walking, as well as motivate investigations of tendon kinetics using wave speed. This work has broad application to clinical gait analyses as well as to further our understanding of the neuromuscular activity underlying healthy gait. For example, we will investigate the hypothesis that age-related changes in the Achilles Tendon can influence propulsive forces in older adults. Finally, we will discuss the broad opportunities and challenges of using ultrasound during clinical gait analysis.
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