In the open kinetic chain midtarsal joint, which axis is associated with supination?

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Multiple Choice

In the open kinetic chain midtarsal joint, which axis is associated with supination?

Explanation:
In the open kinetic chain midtarsal joint, there are two principal axes of rotation: a longitudinal axis and an oblique axis. Supination is the combination of inversion, plantarflexion, and adduction. This set of motions aligns with rotation about the longitudinal axis, which drives the forefoot to invert and plantarflex while moving medially. The oblique axis, by contrast, handles the other pattern of coupled motions (more closely associated with pronation components such as eversion with dorsiflexion and abduction). So, for OKC midtarsal supination, the rotation occurs around the longitudinal axis.

In the open kinetic chain midtarsal joint, there are two principal axes of rotation: a longitudinal axis and an oblique axis. Supination is the combination of inversion, plantarflexion, and adduction. This set of motions aligns with rotation about the longitudinal axis, which drives the forefoot to invert and plantarflex while moving medially. The oblique axis, by contrast, handles the other pattern of coupled motions (more closely associated with pronation components such as eversion with dorsiflexion and abduction). So, for OKC midtarsal supination, the rotation occurs around the longitudinal axis.

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