incision

(in-sizh’un) [L. éncis‘io]. 1. A cut or wound. 2. The act of cutting. Auvr: i., an enlarged incision for splenectomy: the usual incision is made along the outer border of the left rectus muscle and up to the costal cartilages; this is extended upward and posteriorly over the lower ribs to the level of the eighth interspace. Bar’s i., an incision for cesarean section made in the middle line of the abdomen above the umbilicus, the uterus being incised longitudinally. Battle-Jalaguier-Kammerer i., incision for abdominal section, consisting of a vertical incision of the skin and fascia, vertical division of the anterior layer of the sheath of the rectus, with retraction of the rectus inward, vertical division of the posterior layer of the rectal sheath nearer the median line, together with the sub serous areolar ti ue and peritoneum: used in quiescent stage of appendicitis and in some operations on the stomach, liver, and gall-bladder. Bergmann’s i., an incision for exposing the kidney, made from the outer border of the erector spinz at the level of the twelfth rib, toward the junction of the outer and middle third of Poupart’s ligament. Bevan’s i., a vertical one along the outer edge of the right rectus muscle: for exposing the gall-bladder. celiotomy i., an incision made through the abdominal wall to give acce to the peritoneal cavity. Co: i., an incision into an organ made for the purpose of confirming a diagnosis. crucial i., a cro shaped incision. Deaver’s i. (for appendicitis), incision through the sheath of the right rectus muscle, the muscle being then pushed inward. Fergu on’s i., an incision for excision of the upper jaw. It runs along the junction of the nose with the cheek, around the ala of the nose to the median line, and descends to bisect the upper lip. Fowler’s angular i., an incision for anterolateral abdominal section. hockey stick i. See Meyer's hockey-stick i. Kehr’si., an abdominal incision for opening up a wide field. It extends from the xiphoid cartilage to the umbilicus in the median line, and obliquely downward to the right or left of the umbilicus, and again vertically downward. Kiistner’s i., a semilunar abdominal incision with the concavity above, through the fat above the symphysis pubis, following one of the natural folds of the skin. The upper flap is detached from the aponeurosis of the external oblique, and then the usual incision is made parallel to the rectus muscle. Langenbeck’s i., an abdominal incision through the line a semilunar is parallel to the fibers of the rectus abdominis muscle: used for operations on the kidney, spleen, colon, tail of pancreas, etc. Longuet’s i. See Longuct’s operation, under operation. Mackenrodt’s i., a transverse semilunar abdominal incision, the lowest point of which is about 2 cm. above the pubes. McBurney’ "si., an abdominal incision parallel to the fibers of the external oblique muscle and about 1 inch from the anterior-superior spine of the ilium. The skin and subcutaneous fat are incised down to the external oblique, the fibers of which are split; the internal oblique is exposed, its fibers, along with those of the transversal is, being split and separated Meyer's hockey-stick i., an incision for entering the lower anterior abdominal,cavity, partly by intramuscular separation, partly by transverse division of muscle, by an incision shaped somewhat like a hockey-stick: used in complicated appendicitis. Parker’s i., an incision over the area of dulne in appendiceal absce , extending nearly parallel with Poupart’s ligament. Pfannenstiel’s i., an abdominal incision, consisting of a curved incision, the convexity directed downward, just above the symphysis, pa ing through skin, superficial fascia, and aponeurosis, exposing the pyramidal is and recti muscles, which muscles are separated from each other in the median line, the peritoneum being opened vertically. relief-i., a cut made to relieve tension ina part. Vischer’s lumbo-iliac i., separation of the muscular and tendinous fibers of the abdominal muscles of the lumbo-iliac region, just above the center of the iliac crest, in their cleavage lines, without transverse division of the muscle-fibers or harm to the abdominal nerves. Wilde’s i., exposure of the mastoid proce by an incision behind the auricle, the bone being opened if nece ary: done for mastoid absce .