TY - CHAP M1 - Book, Section TI - Incision, Resection, and Replacement of the Diaphragm A1 - Wiener, Daniel C. A1 - Jaklitsch, Michael T. A2 - Sugarbaker, David J. A2 - Bueno, Raphael A2 - Burt, Bryan M. A2 - Groth, Shawn S. A2 - Loor, Gabriel A2 - Wolf, Andrea S. A2 - Williams, Marcia A2 - Adams, Ann Y1 - 2020 N1 - T2 - Sugarbaker’s Adult Chest Surgery, 3e AB - The fan-shaped muscle of the diaphragm arises from the internal circumference of the thorax, with attachments to the sternum, the lower six or seven ribs, and the lumbar vertebral bodies. The muscle fibers also attach posteriorly to the aponeurotic arch of the ligamentum arcuatum externum, which overrides the psoas and quadratus lumborum muscles (Fig. 150-1). Laterally, the fibers of the diaphragm interdigitate with slips from the transversalis muscle of the abdomen to originate from the ribs.1 The right crus is larger and longer than the left and arises from the bodies of the upper three or four lumbar vertebrae. The left crus arises from the upper two lumbar vertebral bodies. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accesssurgery.mhmedical.com/content.aspx?aid=1170415850 ER -