Muscle Shortening and Spastic Cocontraction in Gastrocnemius Medialis and Peroneus Longus in Very Young Hemiparetic Children

Figure 6

Proposed model of gastrosoleus complex stiffness. There is shift towards plantar flexion on the paretic side. The curve is modelled as an exponential relation. x-axis (in degrees by goniometry); -axis (in N/m by dynamometry); , tension threshold, that is, dorsiflexion angle at which very slow passive stretch of gastrosoleus complex faces abnormal resistance, detected by the palpation on the Achilles tendon; , passive extensibility of gastrosoleus complex (V1, slowest stretch velocity possible); PSC, Passive Stretching Course = ; p: paretic, np: nonparetic; ; .