Abstract It is our feeling that hypnosis is a useful tool as an adjunct to surgery. Its usefulness lies in its ability to allay the fears of the apprehensive preoperative patient as well as remove the immediate and remote consequences of the surgical procedure itself. It must be emphasized that a willingness as well as ability to cooperate is a sine qua non for the success of hypnotherapy in any subject. It is this very spirit of cooperation once imbued in a patient by the use of hypnosis which enables the surgery to be accomplished in an aura of cheerfulness rather than of resignation. That suggestions can be more easily imparted to patients in the hypnotic than in the waking state is obvious. The experience of this clinic in the management of 99 patients who have undergone hypnotherapy is described.