Infraspinatus


Also found in: Acronyms.

in·fra·spi·na·tus (mus·cle)

[TA]
intrinsic (scapulohumeral) muscle of shoulder joint, the tendon of which contributes to the formation of the rotator cuff; origin, infraspinous fossa of scapula; insertion, middle facet of greater tubercle of humerus; action, extends arm and rotates it laterally; its tonic contraction helps to hold the head of the humerus in the shallow glenoid fossa; nerve supply, suprascapular (from fifth to sixth cervical spinal nerves).
Synonym(s): musculus infraspinatus [TA]

Infraspinatus

A muscle at the middle of the shoulder blade.
Mentioned in: Tendinitis
References in periodicals archive ?
Associated involvement of subscapularis and infraspinatus muscles did not show much difference.
Electrodes were placed on the upper and lower trapezius; supraspinatus; infraspinatus; anterior, middle and posterior deltoid; and serratus anterior muscles.
In their study, genotype differences were generally observed in IMF contents of 4 muscles (biceps femoris, supraspinatus, semitendinosus, longissimus lumborum, and infraspinatus), although semitendinosus muscle IMF did not differ among genotypes.
(2015) The reliability of rehabilitative ultrasound imaging in the measurement of infraspinatus muscle function in the symptomatic and asymptomatic shoulders of patients with unilateral shoulder impingement syndrome.
Moreover, calpain-1 mRNA abundance was slightly higher and calpastatin mRNA was lower in longissimus lumborum than infraspinatus (41), suggesting that the higher proportion of glycolytic fibers could improve the tenderness of certain muscles by accelerating post mortem aging due to the presence of a higher calpain/calpastatin ratio (43).
The use of surface electrodes to record infraspinatus activity is not valid at low infraspinatus activation levels.
Physicians can relieve the worst asthma attack in five minutes with the IRR, infraspinatus respiratory reflex, after Harry Philliburt, MD from New Orleans.
OBPY'de yaralanmanin hemen sonrasinda yani deltoid, supraspinatus ve infraspinatus kaslarinin paralizi ya da zayif oldugu dA[paragraph]nemde, olgular etkilenen ekstremitelerini fonksiyona katmak iAs.in omuz elevasyonunu kullanirlar (11).
The neurogenic changes mentioned presented as muscle weakness and wasting of the infraspinatus, as well as weakness in the supraspinatus and rhomboids.
(3) Muscles most commonly affected include the deltoid, supraspinatus, infraspinatus, serratus anterior, biceps, and triceps.
Wasting of supraspinatus, infraspinatus and deltoid in upper BPI lead to loss of shoulder stability.
The injured tendons, such as supraspinatus (SSP), infraspinatus (ISP), and subscapularis (SSC), were also evaluated.