Tendon force measurements and movement control: a review

Area of Science:

• Integrates principles from physiology, biomechanics, neuroscience, orthopedics, and physical rehabilitation.
• Focuses on skeletal muscle mechanics and electrophysiology.

Background:

• Estimating skeletal muscle force output has traditionally relied on indirect calculations.
• Recent advancements include forward solution (e.g., EMG) and optimization models for force estimation.
• A critical limitation of current models is the lack of direct experimental validation data.

Purpose of the Study:

• To review the application of in vivo muscle force measurement technology.
• To discuss the significance of buckle transducers for validating existing muscle force estimation models.
• To highlight the role of this technology in future research on muscle load sharing.

Main Methods:

• Utilizes in vivo measurements of muscle force in animal and human subjects.
• Employs a "buckle" type tendon transducer surgically implanted on muscle tendons.
• Reviews existing investigations that have used this transducer technology.

Main Results:

• Buckle transducers provide direct, in vivo measurements of muscle force.
• This direct measurement capability is essential for validating indirect estimation methods.
• The technology has been applied to address diverse questions in muscle function.

Conclusions:

• In vivo muscle force measurement via buckle transducers is critical for scientific advancement.
• This technology enables direct validation of computational models (e.g., EMG, optimization models).
• Future applications include detailed studies of inter-muscular load sharing and model refinement.