Rigid Tendon
Short definition
Simplified muscle model with a non-deforming tendon — fiber length is a function of the musculotendon length.
Full definition
With a rigid tendon the tendon does not stretch, so fiber length is fully determined by the musculotendon length and joint angle. This speeds and simplifies simulations but ignores tendon elastic energy.
Examples
A rigid-tendon model is convenient for fast static calculations.