[Angina pectoris and muscular bridges on the anterior interventricular artery. Apropos of 3 operated cases].

A relationship between ischaemia of the myocardium and a muscular bridge over the anterios descending artery has now been demonstrated. The authors report three cases in which the severity of the clinical features was sufficient to justify surgical division of the muscular bridge without touching the underlying artery. Progress remained satisfactory after a follow-up period of 1.5 to 3 years. The opportunity is taken to discuss the role of the muscle bridge in causing pathology in the coronary arterial system.