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Anatomy Atlases: Atlas of Human Anatomy in Cross Section: Topography of the Thorax and Abdomen

Atlas of Human Anatomy in Cross Section: Appendix: Topography of the Thorax and Abdomen

Appendix

Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Jean J. Jew, M.D., and Paul C. Reimann, B.S.
Peer Review Status: Externally Peer Reviewed


Base (Origin)

According to Eycleshymer and Schoemaker, the origin of the appendix ranges from the third lumbar disk to the middle of the third sacral vertebra. The average position is at the level of the lower third of the fifth lumbar vertebra. Hewson recorded the distance between the base of the appendix and the anterior superior iliac spine of the ilium and found, in 74 subjects measured, that the variations ranged from 3 to 16 cm, with an average distance of 7.2 cm. Further, the distance from the umbilicus to the base of the vermiform appendix was measured in 45 subjects and ranged from 4 to 15 cm, with an average of 7.8 cm. The present study places the origin of the appendix at the level of the middle of the fifth lumbar vertebra.

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