Case Report: PDF OnlyUnusual Origin of Radial Collateral Artery Noted in Quadrangular Space SyndromeGadahad, Mohandas Rao Kappettu*; Bhat, Seetharama Manjunatha; Vollala, Venkata Ramana Author Information Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), Manipal, India. *Correspondence to: Dr. K.G. Mohandas Rao, Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), International Centre for Health Sciences, Manipal 576104, Karnataka State, India. E-mail: [email protected] Received: August 15, 2005; • Accepted: February 13, 2006. Journal of the Chinese Medical Association: June 2006 - Volume 69 - Issue 6 - p 276-277 doi: 10.1016/S1726-4901(09)70256-4 Metrics Abstract 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. © 2006 by Lippincott Williams & Wilkins, Inc.