Quadrilateral space syndrome (QSS) is a rare condition in which the posterior humeral circumflex artery and the axillary nerve are entrapped within the quadrilateral space. The main causes of the entrapment are abnormal fibrous bands and hypertrophy of the muscular boundaries. Many other space-occupying causes such as a glenoidal labral cyst or fracture hematoma have been reported in the literature. However, we could not find a report on classical QSS caused by an osteochondroma. The aim of this case report is to attract attention to an unusual etiology of shoulder pain, and to emphasize the importance of physical examination and x-ray imaging before performing more complex attempts for differential diagnosing.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2488174 | PMC |
| http://dx.doi.org/10.1007/s11420-006-9019-y | DOI Listing |
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Background: Quadrilateral space syndrome is a painful disorder of the shoulder caused by static or dynamic entrapment of the axillary nerve and the posterior humeral circumflex artery. It was first described in 1983; however, it is an uncommon syndrome that initially presents with nonspecific shoulder pain or selective deltoid atrophy, and diagnosis is often delayed owing to its rarity. Young athletes of overhead sports are more commonly affected by this syndrome.
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Article Synopsis
- * Accurate diagnosis relies on understanding clinical signs and utilizing imaging techniques like ultrasound, CT angiography, and MRI, with an emphasis on dynamic imaging due to the positional nature of these syndromes.
- * Treatment often combines conservative methods and surgery focused on decompressing the affected areas, and this overview aims to help radiologists better recognize and manage these conditions for effective patient care.
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