Introduction: While surgical repair is the standard of care for mitral valve (MV) pathology resulting from degenerative changes, various factors influence patient outcomes. These include the patient's pre-operative status, the degree of mitral regurgitation (MR), the repair technique, and the surgeon's and center's experience. Aims: To ascertain the precise pathogenic involvement of certain mitral valve apparatus components. Material and methods: The present study was a Prospective study, Prospective observational study. This Study was conducted from From Sept.2020 to Sept.2022 at Pt. visiting OPD and indoor of IPGMER and SSKM Cardiothoracic. Total 200 patients were included in this study. Result: In our study, two patients (1.0%) developed LA clots. Z has a value of 19.6. P has a value of less than.00001. At p <.05. the finding is significant. 169 (84.5%) patients in our study had SJM implanted valves, 23 (11.5%) patients had CHI implanted valves, and 8 (4.0%) patients had BIO implanted valves. Z has a value of 16.2075. P has a value of less than.00001. At p <.05, the finding is significant. Z has a value of 4.5104. P has a value of less than.00001. At p <.05. the finding is significant. Conclusion: The technique of replacing the original chordae with artificial chordae allows for reconstruction of the real architecture and physiology while preserving the movement of the two valves because it involves a complete rebuilding of the mitral valve apparatus. Thus, it is essential to have a thorough understanding of anatomy and biometry.