An additional ring in the STJ did not change the force distribution in the aortic annulus; however, it reduced the forces at all 3 segments in the STJ. The STJ is much more homogenous in tissue composition, and consists primarily of elastic tissue with a high content of elastin and collagen in all 3 segments, which intuitively provides a more even stress distribution in the 3 segments of the STJ. The radial stress distribution in the STJ was almost reduced to zero after an additional ring in the STJ, which is desirable when performing aortic valve repair to minimize the risk of postoperative redilatation.