Robert Meislin

All articles by Robert Meislin

Quadrangular Space Syndrome

The Problem Quadrangular space syndrome (QSS) or Quadrilateral space syndrome is a compressive neuropathy of the axillary nerve (AN) and/or the posterior circumflex humeral artery (PCHA) in the shoulder. The most frequent cause is a fibrous band(s) in the quadrilateral wpace (QS) and/or surrounding muscle hypertrophy. The QS is bordered by the teres major and…

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