Unusual Origin of Radial Collateral Artery Noted in Quadrangular Space Syndrome

In this paper, an unusual origin of the radial collateral artery of the arm is reported. The radial collateral artery in one of the cadavers dissected by us originated from the posterior circumflex humeral artery. The importance of this abnormal origin of the radial collateral artery from the posterior circumflex humeral artery in quadrangular space syndrome is discussed.

Key Words:  posterior circumflex humeral artery , quadrangular space syndrome , radial collateral artery

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