Table of Contents
How does supination occur?
Supination occurs when weight is placed on the outside of the foot while walking or running. When the opposite happens, and a person shifts their weight from the heel to the forefoot, it is termed pronation.
Where does supination occur in the body?
Pronation and supination are movements that occur at the proximal radioulnar joint. The head of the radius is discoid and fits with the radial neck within the circular annular ligament, that attaches the proximal radius to the ulna.
How is supination of the forearm achieved?
The main function of the supinator is to supinate the forearm. This can be done with the elbow in any position of flexion or extension. Supinator works with biceps brachii if powerful supination is required. However, biceps brachii is unable to supinate when the elbow is extended.
What activities require supination?
Bouncing a tennis ball on a tennis racket. Wringing out a towel by twisting it. Turning the pages of a book. Playing the “guess-which-hand” game where you turn over your hand palm-up to show a hidden object.
How does supination and pronation occur?
Supination and pronation occur as the radius rotates around an axis of rotation that travels from the radial head to the ulnar head (see Fig. 5.12). The 0-degree or neutral position of the forearm is the thumb-up position (Fig.
Does supination occur at the wrist or elbow?
Upper limb pronation/supination occurs within the forearm (i.e. radius pivots around the static ulna about the proximal and distal radioulnar joints).
Why does my supinator muscle hurt?
The most common cause of supinator muscle pain and injury is overuse due to repetitive activities involving forearm pronation and supination (repeatedly turning the palm up and down) or constant contraction of the muscle in supination (palm up).
What does supination look like?
When there is supination, there is uneven wear on the outer part of the shoe, reflecting the stress of a person’s stride. People with supination typically have ankle pain and soreness, shin splints, discomfort on the heels and balls of the feet, and can experience calluses and bunions on the outside of the foot.
How can I improve my supination?
To help treat excessive supination of the foot:
- Select lightweight shoes with extra cushioning and ample room in the toes.
- Wear running shoes specifically designed for underpronators or supinators.
- Wear orthotic insoles designed for underpronation.
Why am I walking on the outside of my foot?
Supination is usually a result of an inherited problem with the structure of your foot. In other words, it may run in families. Supination may also be caused by weakness in certain muscles of your foot, ankle, and leg.