Inversion is the movement of the sole towards the median plane (as when an ankle is twisted).
Tibialis anterior and tibialis posterior invert.[1] Some sources also state that the triceps surae and extensor hallucis longus invert.[2]
It occurs at the subtalar joint.[3]
cartilaginous: Synchondrosis - Symphysis
synovial: Plane joint - 1° (Hinge joint, Pivot joint) - 2° (Condyloid joint, Saddle joint) - 3° (Ball and socket joint)
specialized/upper limbs: Protraction/Retraction - Supination/Pronation
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