An inverted movement, specifically referring to the foot, is the action where the sole of the foot turns inward (medially) towards the body's midline, with the outer edge of the foot tilting downward.
To elaborate:
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Definition: Foot inversion involves simultaneously raising the medial border of the foot and lowering the lateral border. This results in the sole of the foot facing inward.
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Mechanism: This movement primarily occurs at the subtalar joint, although other joints in the foot contribute to a lesser extent.
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Visual Cue: Imagine trying to look at the bottom of your own foot while keeping your leg stationary.
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Antagonistic Movement: The opposite of inversion is eversion, where the sole of the foot turns outward.
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Clinical Relevance: Inversion is a component of supination. Excessive inversion can lead to ankle sprains, particularly lateral ankle sprains due to the increased stress on the lateral ligaments.
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Example: When walking on an uneven surface, your foot may invert to maintain balance.
Therefore, "inverted movement" when referencing the foot is specifically the inward turning of the sole.
