<Ul> <Li> The upper midline incision usually extends from the xiphoid process to the umbilicus . </Li> <Li> A typical lower midline incision is limited by the umbilicus superiorly and by the pubic symphysis inferiorly . </Li> <Li> Sometimes a single incision extending from xiphoid process to pubic symphysis is employed, especially in trauma surgery . Typically, a smooth curve is made around the umbilicus . </Li> </Ul> <Li> The upper midline incision usually extends from the xiphoid process to the umbilicus . </Li> <Li> A typical lower midline incision is limited by the umbilicus superiorly and by the pubic symphysis inferiorly . </Li> <Li> Sometimes a single incision extending from xiphoid process to pubic symphysis is employed, especially in trauma surgery . Typically, a smooth curve is made around the umbilicus . </Li>

What does a surgeon use when he is making an incision