teres minor muscle


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Related to teres minor muscle: teres major muscle, Subscapularis muscle

te·res mi·nor mus·cle

(ter'ēz mī'nŏr mŭs'ĕl)
Origin, upper two thirds of the lateral border of scapula; insertion, lower facet of greater tuberosity of humerus; action, adducts arm and rotates it laterally; nerve supply, axillary (fifth and sixth cervical spinal nerves).
Synonym(s): musculus teres minor [TA] .

teres minor muscle

Shoulder muscle. Origin: upper lateral edge of scapula. Insertion: greater tubercle of humerus. Nerve: axillary (C4-C6). Action: laterally rotates arm.
See also: muscle
References in periodicals archive ?
Schematic mapping of recommended injection site for the teres minor muscle.
They are usually identified by the distinct combination of muscle bellies involved: Suprascapular nerve entrapment at the suprascapular notch affects the supraspinatus and infraspinatus muscles; suprascapular nerve entrapment at the level of the spinoglenoid notch (distal to supraspinatus motor innervation) affects only the infraspinatus muscle; quadrilateral space syndrome (compression of the axillary nerve in the quadrilateral space) usually affects just the teres minor muscle; and ParsonageTurner Syndrome, an acute brachial neuritis, can involve single or multiple nerve distributions (Figure 10).
If an entry point inferior to the teres minor muscle (through the quadrangular space) is used, other potential risks are contact with the axillary nerve and the posterior humeral circumflex artery.
The supraspinatus, infraspinatus and teres minor muscles all originate from the posterior scapular region to insert onto the superior, posterior and inferior facets of the greater humeral tuberosity, respectively (Rockwood et al.,; Sinnatamby, 2006; Standring et al., 2008; Muscolino, 2010).