The patient population includes all patients indicated for a TV repair procedure concomitantly to left-sided heart surgery, and for which the surgeon considers the implantation of a Contour 3D® Tricuspid Annuloplasty Ring most appropriate to reconstruct the diseased valve. Patients with primary TV are not included, since this is often characterized by pathological leaflets for which the Contour 3D® Tricuspid Annuloplasty Ring would not be beneficial.