Between Mar. 13 and Sept. 16, 1991, the authors performed 10 inguinal herniorrhaphies laparoscopically. Two patients with a type II hernia (indirect with dilated internal ring but intact posterior inguinal wall) had laparoscopic preperitoneal closure of the internal ring with interrupted 0-Prolene. Seven patients had a type IIIA hernia (direct), and one patient had a large type IIIB hernia (indirect with dilated internal ring and medial encroachment or destruction of transversalis fascia of Hesselbach triangle). They all underwent laparoscopic preperitoneal placement of Prolene mesh, which was fixed in place with interrupted 0-Prolene sutures. All patients recovered promptly, with less pain and minimal limping, resulting in high patient acceptance of the procedure. There were no complications. Although no recurrence was noted and the technique appears sound, it is too early to predict its long-term success. At present, the preperitoneal approach is difficult to perform because of lack of appropriate instrumentation. The surgeon who plans to perform such a procedure must be familiar with the anatomy. We suggest that every potential candidate for laparoscopic inguinal hernia repair should be apprised of the advantages and disadvantages of this approach. A research consent form should be read and signed by every patient.