ABSTRACT
Anatomy The aortic valve is a tricuspid valve with a right, left and noncoronary cusp
(Fig. 6.1). The right coronary orifice is in the sinus of Valsalva of the right coro nary cusp; the left main coronary ostium is in the sinus of Valsalva of the left coronary cusp. The junction between the left and right coronary cusps is the intercoronary commissure; the junction between the right coronary cusp and the noncoronary cusp is the anterior commissure; the junction between the noncoronary cusp and the left coronary cusp is the posterior commissure.
