ABSTRACT
Left atrioventricular orifice of heart is guarded by bicuspid Mitral valve. It is affected much in comparison toother heart valves in Rheumatic Heart Disease. Anatomy of this complex structure is altered in many pathologicalconditions and may require repair or replacement. The purpose of the study is to analyze its morphology andmorphometry by conventional dissection method. Formalin fixed 20 adult heart specimens were collectedirrespective of sex from Department of Anatomy, Govt. Tirunelveli Medical College,Tirunelveli. In this study theheight and length of anterior leaflet was between 7.16 mm – 22.31mm and 12mm – 65.87 mm respectively. Theheight and length of posterior leaflet was between 5.40mm – 21.5mm and 10.90mm – 59.95mm respectively.Orifice circumference of mitral orifice is 6.2 to 10.5cm. Anterior leaflet were larger than the posterior leaflets.The results are correlated with other studies and concluded about its morphometry. This will help in multimodalityimaging assessment and in planning surgery which may be either repair or replacement