supinator muscle


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su·pi·na·tor mus·cle

(sū'pi-nā'tŏr mŭs'ĕl)
Origin, lateral epicondyle of humerus, radial collateral and anular ligaments, and supinator ridge of ulna; insertion, anterior and lateral surface of radius; action, supinates the forearm; nerve supply, radial (posterior interosseous).
Synonym(s): musculus supinator [TA] .
References in periodicals archive ?
As noted by Abrams and associates, (4) the PIN exits the supinator muscle on average 7.
Thus, intra-operative nerve exploration must be conducted with sufficient accuracy, particularly in fractures of proximal third, as when dividing supinator muscle, it should be dissected layer by layer to prevent nerve damage.
Sixty upper limbs from 30 Turkish subjects (18 males and 12 females) were dissected to reveal the course of the PIN and to examine possible compression sites at the proximal and distal edges of the supinator muscle, and the exit of the nerve from the ECRB (Kirici & Irmak, 2004).
However, we have been able to visualise it by placing the ultrasound probe at the proximal part of the posterolateral compartment of the forearm, 5 to 7 cm away from the elbow, exactly at the point where the nerve plunges into supinator muscle (Figure 1d).