The natural history of mitral regurgitation -- Functional anatomy of the mitral valve -- Pathology of mitral valve disease -- Assessing the functional substrate of mitral regurgitation with echocardiography -- Overview of mitral valve repair -- Annuloplasty : sutures, bands, and rings -- Commissurotomy -- Anterior leaflet repair techniques -- Posterior leaflet repair techniques -- Commissural repair techniques -- Other techniques -- Complications and assessing the quality of repair.