Commentary: Evolution of chordal techniques for mitral valve repair

In the 1960s and '70s, mitral valve replacement for mitral regurgitation was among the highest-risk procedures in cardiac surgery.1 Fifty years later, surgery for mitral regurgitation has become extremely safe and effective2—arguably among the major success stories in medicine. This transition was due largely to the development of contemporary mitral valve repair, and in this issue, Rehman and colleagues3 present their current technique for robotic artificial chord implantation in a highly lucid video.