SUPINATOR Meaning and
Definition
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A supinator is a term used in human anatomy to refer to a specific muscle located in the lower arm, known as the supinator muscle. This muscle plays a crucial role in forearm movement and is responsible for supination of the forearm. Supination is the movement that allows the hand to rotate from a palm-down (pronation) position to a palm-up position.
The supinator muscle is located on the posterior aspect of the forearm, specifically in the proximal forearm, near the elbow joint. It originates from the lateral epicondyle of the humerus bone and the radial collateral ligament. It then travels downward and attaches to the proximal third of the radius bone through an expansion called the supinator crest.
When the supinator muscle contracts, it causes the radius bone to rotate externally, resulting in supination of the forearm. This movement is important for various activities involving the hand, wrist, and forearm, such as turning a doorknob, pouring a drink, or using tools. The supinator muscle also works in coordination with other muscles in the forearm to facilitate a smooth and controlled supination movement.
Injuries or conditions that affect the supinator muscle can result in limited or painful forearm supination, leading to difficulties in performing daily tasks. Physical therapy or specific exercises can be prescribed to strengthen and rehabilitate the supinator muscle, helping individuals regain normal function and mobility in their forearm.
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A muscle which produces supination of the forearm; see under musculus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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In anat., one of those muscles which turn the palm of the hand forwards or upwards.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for SUPINATOR
Etymology of SUPINATOR
The word "supinator" is derived from the Latin verb "supinare", which means "to lay on the back" or "to turn upward". The term is a combination of "supinus", meaning "lying on the back" or "turned upward", and the suffix "-tor", which indicates the doer of an action, producing the noun "supinator" that refers to a muscle responsible for supinating or turning the forearm and hand upward.
Similar spelling words for SUPINATOR
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