scapula


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scapula

 [skap´u-lah] (L.)
the flat triangular bone in the back of the shoulder. See anatomic Table of Bones in the Appendices.
winged scapula one having a prominent vertebral border usually owing to weakness of one of the muscles holding the scapula in place.

scap·u·la

, gen. and pl.

scap·u·lae

(skap'yū-lă, -lē), [TA]
A large triangular flattened bone lying over the ribs, posteriorly on either side, articulating laterally with the clavicle at the acromioclavicular joint and the humerus at the glenohumeral joint. It forms a functional articulation with the chest wall, the scapulothoracic articulation.
[L. scapulae, the shoulder blades]

scapula

/scap·u·la/ (skap´u-lah) pl. scap´ulae   [L.] shoulder blade; the flat, triangular bone in the back of the shoulder. scap´ular

scapula

(skăp′yə-lə)
n. pl. scapu·las or scapu·lae (-lē′)
Either of two large, flat, triangular bones forming the back part of the shoulder. Also called shoulder blade.

scapula

[skap′yələ]
one of the pair of large flat triangular bones that forms the dorsal part of the shoulder girdle. It has two surfaces, three borders, three angles, and a prominent dorsal spine. The acromion of the scapula forms the summit of the shoulder. The coracoid process, resembling a raven's beak, accommodates the attachment of various muscles, including the pectoralis minor, and ligaments, including the trapezoid. Also called shoulder blade.
enlarge picture
Posterior view of the right scapula

scap·u·la

, pl. scapulae (skap'yū-lă, -lē) [TA]
A large, triangular, flattened bone lying over the ribs, posteriorly on either side, articulating laterally with the clavicle at the acromioclavicular joint and the humerus at the glenohumeral joint. It forms a functional joint with the chest wall, the scapulothoracic joint.
Synonym(s): shoulder blade.
[L. scapulae, the shoulder blades]

scapula

(skapu-la') [L., shoulder blade]
Enlarge picture
SCAPULA
The large, flat, triangular bone that forms the posterior part of the shoulder. It articulates with the clavicle and the humerus. Synonym: shoulder blade See: illustration; triceps

plane of scapula

The angle of the scapula in its resting position, normally 30° to 45° forward from the frontal plane toward the sagittal plane. Movement of the humerus in this plane is less restricted than in the frontal or sagittal planes because the capsule is not twisted.
See: Scapula Instability

tipped scapula

A condition in which the inferior angle of the scapula is prominent, usually the result of faulty posture and a tight pectoralis minor muscle. Tipping is a normal motion when a person reaches with the hand behind the back.

winged scapula

Condition in which the medial border of the scapula is prominent, usually the result of paralysis of the serratus anterior or trapezius muscles. Synonym: angel's wing

scapula

The shoulder blade. A flat, triangular bone with a prominent, near-horizontal raised spine, lying over the upper ribs of the back. At its upper and outer angle the scapula bears a shallow hollow with which the rounded head of the upper arm bone (the humerus) articulates. The spine ends in a bony process, the coracoid process, the end of which connects with the outer end of the collar bone (clavicle).

scapula

the shoulder blade. see PECTORAL GIRDLE.

scap·u·la

, pl. scapulae (skap'yū-lă, -lē) [TA]
Large triangular flattened bone lying over the ribs, posteriorly on either side, articulating laterally with clavicle at the acromioclavicular joint and humerus at the glenohumeral joint.
[L. scapulae, the shoulder blades]

scapula

pl. scapulae [L.] the flat triangular bone at the top of the shoulder; the shoulder blade. See also Table 10.
Enlarge picture
Scapula of the dog. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004

winged scapula
References in periodicals archive ?
It measured the fixation of the rTSA glenoid baseplate in the composite scapula before and after the application of 10,000 cycles of dynamic loading for 55[degrees] at 0.
The examiner stood behind the subject using his proximal hand to secure the scapula and the distal one to hold the elbow (which is 90[degrees] bent) in order to induce the humerus to the abduction position, and at the same time contrasting its tendency to gravity-induced intrarotation.
The bone worker was evidently familiar with the properties of various bones and, if the required bone was unavailable, chose some other flat bone--rib or mandible--which has similar properties to the traditionally used scapula that is also a flat bone.
Scapular muscle actions allow proper positioning and stability of the scapula while maintaining the glenohumeral center of rotation throughout arm motion.
X-rays revealed he has a fracture of his right scapula [shoulder blade], three ribs on his right side and his left ankle.
Before 1970, most patients with high-grade sarcomas arising from the scapula were treated with a forequarter amputation (1).
Camptodactyly may also coexist with anomalies, such as high arched palate, anomalies of scapula, scoliosis, ptosis, hemi-hypertrophy and taurinuria.
They cover epidemiology, genetics, and biological factors; biomechanics and its role in pathology; the role, evaluation, and treatment of the scapula and its dysfunction; instability; growth factors and tendon healing; autologous blood products in repair; tendinopathy of the long head of the biceps; conservative treatment and tear progression; operative management; preventing complications; and various techniques for different tears.
I said I didn't know, of course, but it looked like the scapula of a whale.
The acromion and coracoid process of the scapula are usually preserved despite severe hypoplasia of the body.
When this happens, the scapula has already pushed the bow arm out as far as it can extend before the arrow is released.
According to Richardson, "The tendency toward droopy arms happens when a dancer tries to hold a long, heavy arm without support from the back and scapula.