ANATOMY

Detailed explanation-1: -Supination describes the motion of turning the palm anteriorly (Fig. 1.14). Most often these motions occur with the hands in front of the body to accommodate grasping and holding types of activities, so supination is considered turning the palm of the hand upward, and pronation is considered turning the palm downward.

Detailed explanation-2: -Supination of the hand brings the palm to face forward in the anatomical position. It is the position you would place your hand in order to hold “soup". Muscles: biceps brachii and supinator. Brachioradialis can return the pronated hand to a position mid-way between supination and pronation.

Detailed explanation-3: -“Supination is a combination of three movements at the foot – known as plantar flexion, inversion, and adduction, ” says Yau. “This is the position the foot assumes during the push-off phase of gait. The average range of motion for supination is 20 degrees.

Detailed explanation-4: -With forearm pronation the dorsal superficial radioulnar ligament and palmar deep radioulnar ligament tighten, while in supination the palmar superficial radioulnar ligament and dorsal deep radioulnar ligament tighten.