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The quadrangular space is a clinically important anatomic space in the arm as it provides the anterior regions of the axilla a passageway to the posterior regions. In the quadrangular space, the axillary nerve and the posterior humeral circumflex artery can be compressed or damaged due to space-occupying lesions or disruption in the anatomy due to trauma.
This space is in the posterior wall of the axilla. It is a quadrangular space bounded laterally by surgical neck of the humerus, medially by long head of triceps brachii and inferiorly by teres major. It is bounded superiorly by subscapularis in front, capsule of the shoulder joint in the middle, and behind by teres minor.
The nerve lies at first behind the axillary artery, [4] and in front of the subscapularis, [1] and passes downward to the lower border of that muscle.. It then winds from anterior to posterior around the neck of the humerus, in company with the posterior humeral circumflex artery, [2] through the quadrangular space (bounded above by the teres minor, below by the teres major, medially by the ...
Quadrangular space syndrome: Shoulder muscle (rotator cuff) ... Quadrilateral space syndrome is a rotator cuff denervation syndrome in which the axillary nerve is ...
It passes posteriorward with the axillary nerve through the quadrangular space. ... It is distributed to the shoulder joint ... and axillary nerves of right side ...
Fultz has been diagnosed with Neurogenic Thoracic Outlet Syndrome, a shoulder injury, and is out indefinitely. Doctors have discovered a nerve condition in Markelle Fultz's neck and shoulder that ...
Injury most commonly occurs proximal to the quadrangular space. [3] Injury in this nerve causes paralysis (as always) to the muscles innervated by it, most importantly deltoid muscle. This muscle is the main abductor of the shoulder joint from 18 to 90 degrees (from 0 to 18 by supraspinatus). Injury can result in a reduction in shoulder ...
The triangular interval (also known as the lateral triangular space, [1] lower triangular space, [2] and triceps hiatus) is a space found in the axilla. It is one of the three intermuscular spaces found in the axillary space. The other two spaces are: quadrangular space and triangular space. [3]