The new repair is essentially a modification of the Halsted technic . A quilting type stitch (Fig. i) is placed in the medial edge of the internal ring and three additional stitches in the rest of the inguinal canal . This type of suturing approximates all the layers of the wall of the inguinal canal, including the peritoneum, thus providing a strong resistance against a recurrent indirect hernia, It is suitable in cases in which debility, senility, long-standing use of a truss or an extremely large hernia present a weak conjoined tendon and thinned out abdominal muscles in the wall of the inguinal canal . For such cases this repair has been used for a number of years in the Nankin Clinic with excellent results . Where the muscles of the abdominal wall are normal, however, the Halsted repair is used . The inguinal canals of ten cadavers, nine males and one female, ranging from forty to seventy years of age, were used in the experiment. The apparatus (Fig . 2) consisted of a single pulley and a strong malleable copper wire, one end of which was threaded through the inguinal canal and internal ring . A transverse incision was then made through the abdominal wall just inferior to the umbilicus . This permitted visualization of the internal ring and the end of the copper wire to which a stainless steel, bullet-shaped cone was attached . (Fig . 2.) At the other end of the copper wire weights were attached until the cone was puffed through the inguinal canal and the external inguinal ring . In this way an artificial indirect hernia resulted. Surprisingly enough, avulsion E VvER since the time of Halsted [3] and Bassini [r], numerous modifications of hernial repair have been devised. A new modification of the original Halsted repair has been devised which seals off the inguinal canal in those direct hernias where there is marked atrophy of the tissues ; it appears to he stronger than either the Bassini or Halsted repair . The method will be described and the technic applied for testing its strength . The recurrence rate is one of the clinical criteria used in evaluating repairs . According to Clear [a] a ten-year period of follow-up is required . This type of study is feasible when dealing with a select group of patients, such as veterans, since they usually return to a government institution more readily than do patients from the general population . As a result it becomes difficult to evaluate recurrence rates of follow-ups in non-government hospitals. Because of this difficulty it was decided to test the new type of repair in the laboratory using cadaver material . Although long clinical experience must be the ultimate test for any procedure, laboratory testing has the advantages that one can use as controls successive repairs on the same or opposite sides of the same cadaver . Furthermore, a cadaver is not subject to the extremely variable factors of activity, diet, emotional stress, disease, etc . Of course, such experiments arc designed to test only the strength of the repair and cannot be compared to the living individual in regards to intra-abdominal pressure, elasticity, or strength of tissues .
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