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Mitral valve replacement (MVR) in the presence of the extensive calcification of the mitral annulus is a technical challenge. The heavily calcified annulus can cause great difficulty in the insertion of a prosthetic valve and periprosthetic leakage later on. Vigorous annular decalcification may cause circumflex coronary artery injury, atrioventricular rupture and thromboembolic events. We herein describe a surgical technique for MVR in such cases while focusing on partial decalcification of the posterior mitral annulus and its reinforcement and buttressing with the transferred anterior mitral leaflet (AML). At the same time, the transferred AML supports the posterior annular region and maintains ventricular-annular continuity, thus preserving the left ventricular function.

european journal of cardio-thoracic surgery

Mitral valve replacement with posterior transposition of the anterior mitral leaflet which covers and buttresses partially decalcified posterior mitral annular bed