Supination is defined as:

Supination refers to the movement patterns primarily involving the foot and ankle where the foot rolls outward, and the weight is borne on the outer edges. This clinical term includes a combination of specific movements: adduction (the movement of a body part towards the midline), plantar flexion (pointing the toes downward), and inversion (turning the sole of the foot inward).

In this context, identifying the correct definition of supination is crucial for understanding foot mechanics, particularly when assessing patients who may have conditions related to overpronation or excessive supination. Recognizing that adduction, plantar flexion, and inversion collectively describe the supination movement helps in evaluating alignment and suggesting appropriate footwear or orthotics tailored to individual needs.

The other choices do not accurately represent the components of supination, mixing up terms that describe different motions or combinations that do not align with the established definition of supination in pedorthics. Understanding these key concepts is vital when approaching foot-related assessments and devising treatment plans.