scapula

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scapula

1. either of two large flat triangular bones, one on each side of the back part of the shoulder in man
2. the corresponding bone in most vertebrates

Scapula

 

the flat triangular bone adjacent to the posterolateral surface of the thoracic wall and vertically occupying the space between the second and seventh ribs.

The upper margin of the scapula has a notch through which blood vessels pass. The outer corner has an oval depression, the glenoid cavity, for articulation with the head of the humerus. The articular surface passes through the neck and into the shaft of the scapula. There is a tuberosity above and below the glenoid cavity to which the heads of the shoulder muscles (triceps and biceps) are attached. The spine of the scapula passes obliquely along the posterior surface of the bone and ends in the acromial process, which has a platform for articulation with the clavicle. The coracoid process, at the outer corner of the scapula, serves for the attachment of the pectoralis minor and coracobrachialis muscles and the short head of the biceps.

scapula

[′skap·yə·lə]
(anatomy)
The large, flat, triangular bone forming the back of the shoulder. Also known as shoulder blade.
References in periodicals archive ?
Complete absence of the suprascapular notch in a Nigerian scapula: A possible cause of suprascapular nerve entrapment.
Morphometric dimensions of the scapula. Ege T?p Derg., 42(2):73-80, 2003.
The length of the scapula was noted as the maximum distance between the superior and inferior angle.
The length of right scapula varies from 11 to 16 cm with an average of 13.88 cm and that of left scapula varies from 13 to 17 cm with an average of 14.22 cm (Table 5).
The suprascapular notch is a depression on the lateral part of superior border of scapula running medial to the coracoid process.
Silva et al12 found the ossified STSL in 68 out of 221 (30.76%) dry scapula in Brazilians.
Each scapula is observed carefully for complete or incomplete ossification of suprascapular ligament on superior border of scapula.
There are six different types of suprascapular notch according to Rangachary et al., [21,22] in which type VI is described as scapula with completely ossified STSL forming the foramen.
Mechanical irritation of the suprascapular nerve can occur at this location with excursions of the scapula, particularly during cross-body abduction, during a variety of activities involving movement of the upper extremity (Clein, 1975; Gelmers & Buys; Antoniadis et al.; Weinfeld et al.).
The muscles, supraspinatus and scapula elevator transit in this region can be related to the STSL calcification, associated to the muscular groupings of this region.
Anatomical variations in the shape of suprascapular notch of scapula. J Morphol Sci, 2010; 27(1): pp.