Redefinition of tricuspid valve structures for successful ring annuloplasty

There was a structural gap between the tricuspid leaflet indentations and the subvalvular structures. The relationships among the leaflets, commissures, and subvalvular structures differed in the septal, anterior, and posterior leaflets. This new definition of the commissural point may aid the development of a clear-cut methodology for prosthetic ring annuloplasty.