The infraspinous fossa (infraspinatus fossa or infraspinatous fossa) of the
scapula
The scapula (plural scapulae or scapulas), also known as the shoulder blade, is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone). Like their connected bones, the scapulae are paired, with each scapula on eithe ...
is much larger than the
supraspinatous fossa
The supraspinous fossa (supraspinatus fossa, supraspinatous fossa) of the posterior aspect of the scapula (the shoulder blade) is smaller than the infraspinous fossa, concave, smooth, and broader at its vertebral than at its humeral end. Its med ...
; toward its
vertebral margin a shallow concavity is seen at its upper part; its center presents a prominent convexity, while near the
axillary border is a deep groove which runs from the upper toward the lower part.
The medial two-thirds of the fossa give origin to the
Infraspinatus
In human anatomy, the infraspinatus muscle is a thick triangular muscle, which occupies the chief part of the infraspinatous fossa.''Gray's Anatomy'', see infobox. As one of the four muscles of the rotator cuff, the main function of the infraspin ...
; the lateral third is covered by this muscle.
Additional images
File:Infraspinatus fossa of left scapula- animation.gif, Left scapula. Infraspinatous fossa shown in red.
File:Infraspinatus fossa - animation.gif, Animation. Infraspinatous fossa shown in red.
File:Infraspinatous fossa of scapula01.png, Still image.
File:Gray203.png, Left scapula. Dorsal surface. ("Infra-spinatous" fossa visible at bottom right.)
File:Scapula post.jpg, Left scapula. Dorsal surface. Infraspinatous fossa not labeled, but visible at center.
File:Infraspinatus muscle back2.png, Infraspinatus muscle
In human anatomy, the infraspinatus muscle is a thick triangular muscle, which occupies the chief part of the infraspinatous fossa.'' Gray's Anatomy'', see infobox. As one of the four muscles of the rotator cuff, the main function of the infraspi ...
seen from behind.
File:Gray810.png, Suprascapular and axillary nerves of right side, seen from behind.
References
External links
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Shoulder
Scapula
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