abnormal tricuspid valve morphology abnormal tricuspid valve anulus morphology 2010-10-06T03:50:28Z MP:0010621 MPheno.ontology any structural anomaly of the fibrous ring of the tricuspid valve that attaches the cusps of tricuspid valve to the heart, and which consists of portions of the fibrous scallops of the anterior cusp (infundibular cusp), the posterior cusp (marginal cusp), and the septal cusp (medial cusp) csmith