Abstract
Background Every foot muscle crosses and acts upon multiple joints. The close association of foot bones and their supportive ligaments creates several closed kinematic chains. The movement of one bone necessitates the movement of several others. Terms that describe foot motion do not seem to account for these correlated motions. This presentation shows that “plantarflexion-dorsiflexion” necessitates, and therefore implies, more than just a rotation at the talocrural joint.
Highlights
Every foot muscle crosses and acts upon multiple joints
A rigid cluster was inserted into the tibia, talus, calcaneus, Figure 1 Rotational motion patterns of the medial foot joints responding to talocrural plantarflexion-dorsiflexion
Motion patterns about of these joints were examined as a function of talocrural plantarflexion-dorsiflexion
Summary
Every foot muscle crosses and acts upon multiple joints. The close association of foot bones and their supportive ligaments creates several closed kinematic chains. The movement of one bone necessitates the movement of several others. Terms that describe foot motion do not seem to account for these correlated motions. This presentation shows that “plantarflexion-dorsiflexion” necessitates, and implies, more than just a rotation at the talocrural joint
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