infraspinatus muscle

(redirected from Infraspinatous muscle)

in·fra·spi·na·tus mus·cle

(in'fră-spī'nŭ-tŭs mŭs'ĕl)
Origin, infraspinous fossa of scapula; insertion, middle facet of greater tubercle of humerus; action, extends arm and rotates it laterally; nerve supply, suprascapular (from fifth to sixth cervical spinal nerves).
Synonym(s): musculus infraspinatus [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

infraspinatus muscle

Shoulder muscle. Origin: medial two-thirds of infraspinatus fossa of scapula. Insertion: posterior side of greater tubercle of humerus. Nerve: suprascapular (C4-C6). Action: rotates arm laterally.
See also: muscle
Medical Dictionary, © 2009 Farlex and Partners

infraspinatus muscle

A muscle that runs from the back surface of the shoulder blade (SCAPULA) to the back of the upper part of the upper arm bone (HUMERUS). Its action is to rotate the arm outwards.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005