Quadrilateral Space Syndrome

Quadrilateral space syndrome is a rotator cuff denervation syndrome in which the axillary nerve is compressed at the quadrilateral space of the rotator cuff.
Quadrilateral space syndrome. Quadrilateral space qs syndrome qss is a relatively rare condition in which the axillary nerve and the posterior humeral circumflex artery are compressed within the qs. Fibrous bands are most commonly implicated as the cause with true space occupying lesions being less common. Diagnosis can be complicated by. Quadrilateral space syndrome usually happens from overuse especially with overhead sports like throwing and swimming.
Quadrilateral space syndrome is an uncommon cause of paresthesia and an underdiagnosed cause of digital ischemia in overhead athletes. Impingement is most frequently due to trauma fibrous bands or hypertrophy of one of the muscular borders. Quadrilateral space syndrome qss happens when the axillary nerve is compressed or injured in the back of the shoulder. Quadrilateral space syndrome qss arises from compression or mechanical injury to the axillary nerve or the posterior circumflex humeral artery pcha as they pass through the quadrilateral space qs.
This is a vary rare condition but should be suspected in athletes with the symptoms below. Quadrilateral space syndrome qss is compression of the axillary nerve and posterior humeral circumflex artery as they pass through this space. Quadrilateral space syndrome qss is a rare disorder characterized by axillary nerve and posterior humeral circumflex artery phca compression within the quadrilateral space. Quadrilateral space syndrome is a rare disorder characterized by compression of the axillary nerve and posterior humeral circumflex artery within the quadrilateral space 1.
Fibrotic bands form as the result of trauma with resultant scarring and adhesions. Quadrilateral space syndrome is an uncommon cause of paresthesia and an underdiagnosed cause of digital ischemia in overhead athletes. Quadrangular space syndrome most commonly occurs when the neurovascular bundle is compressed by fibrotic bands within the narrow quadrangular space and or by hypertrophy of the muscle boundaries.