crus (right)

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The right crus is characterised by:

  • origin on anterior surface of upper three lumbar vertebral bodies and their interposed intervertebral discs
  • tendon fibres pass superiorly and to the left to form a sling around the oesophagus at its aperture through the diaphragm
  • muscle fibres merge beyond the oesophagus, pass superoanteriorly and insert into the central tendon of diaphragm
  • wider and longer than left crus

Last reviewed 01/2018

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