supinator


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su·pi·na·tor (mus·cle)

[TA]
1. muscle of deep layer of proximal part of posterior compartment of forearm; 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).
2. a muscle that supinates, that is, twists the forearm about a longitudinal axis from the pronated or neutral position toward one in which the palms face anteriorly (in the anatomic position).
Farlex Partner Medical Dictionary © Farlex 2012

supinator

(so͞o′pə-nā′tər)
n.
A muscle, especially in the forearm, that effects or assists supination.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

supinator

(sū″pĭn-ā′tor) [L.]
A muscle producing the motion of supination of the forearm.
Medical Dictionary, © 2009 Farlex and Partners

supinator

One of the forearm muscles whose action is to rotate the hand into the palm-up position.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Berglund, "A mechanical study of the moment-forces of the supinators and pronators of the forearm," Acta Orthopaedica, vol.
According to our observation, the DBRN after emerging from the supinator gives off short branches to the superficial extensor muscles.
This study found that selected combinations of clinical findings that consisted of (1) gait deviation, (2) positive Hoffmann sign, (3) inverted supinator sign, (4) positive Babinski sign, and (5) patients older than 45 years were effective in ruling out and ruling in cervical spine myelopathy.
Damage to the PI nerve has been usually reported in the dorsal approach, but its occurrence after volar approach indicates that, careful attention must be paid during supinator muscle dissection.14
Yazici krampinda sik enjeksiyon yapilan kaslar ve dozlar Kaslar Dozlar Fleksor digitorum superfisyalis 25-50 U BOTOX[R]-75-150 U DYSPORT[R] Fleksor digitorum profundus 20-40 U BOTOX[R]-60-120 U DYSPORT[R] Fleksor pollisis longus 10-20 U BOTOX[R]-30-50 U DYSPORT[R] Fleksor karpi ulnaris 20-40 U BOTOX[R]-60-120 U DYSPORT[R] Fleksor karpi radyalis 25-50 U BOTOX[R]-75-150 U DYSPORT[R] Ekstensor pollisis longus 10-20 U BOTOX[R]-30-50 U DYSPORT[R] Pronator teres 20-30 U BOTOX[R]-60-100 U DYSPORT[R] Ekstansor digitorum komunis 15-25 U BOTOX[R]-50-75 U DYSPORT[R] Supinator 10-20 U BOTOX[R]-30-50 U DYSPORT[R] Lumbrikaller/ekstensor indisis 5-10 U BOTOX[R]-15-30 U DYSPORT[R] proprius
Reflex Assessment--Upper limb Assessment# Nerve# (Relax Limb)# Reflex# Root# Place finger over bicep, Bicep C5#, C6 tap finger with tendon hammer, watch bicep contraction Place finger over radial Brachioradialus C6#, C5 tubersosity, tap finger or supinator watch brachioradialus Tap tendon hammer Triceps C7# directly on the triceps tendon, watch muscle Note.
On both ulnae, the crest that supports the supinator muscle (the muscle that turns the forearm when the elbow is straight) is pronounced.
The deep branch is more difficult to image because it arises from the radial nerve at the level of the neck of the radius and enters the posterior compartment by passing between the two heads of supinator (Figure 1a).
Additionally, the supinator fat pad is located on the proximal forearm, but will not be discussed in this article.
Muscles include deltoid posterior (DP), middle (DM), and anterial (DA), pectorelis major clavicle portion (PC), biceps brachii (BB) including biceps long (BBlh) and biceps short (BBsh) , triceps brachii (TB) including triceps lateral (TBlt), triceps long (TBlh) and triceps mid (TBmd), brachialis (BS), brachioradialis (BR), pronator teres (PT), supinator (SP) and pronator quadratus (PQ).
Two other important movements are pronation (palms-down), provided by the pronator teres, and supination (palms-up), provided by the small, deep supinator on the lateral side of the elbow.