Impotence can be caused by leakage of venous blood from the penis during erection. Of 135 patients studied with erectile dysfunction, 40 had venous leakage, and these patients were classified into three groups according to findings on cavernosograms. Thirty-one patients were treated with implantation of balloons and coils. Twenty-six of these patients now have normal sexual function. The authors believe this technique is simple, safe, and effective for the treatment of impotence caused by venous leakage.