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Sudeck point

Last revised by Dr Yair Glick on 01 Jun 2021

The Sudeck point (or Sudeck critical point) refers to a specific location in the arterial supply of the rectosigmoid junction, namely the origin of the last sigmoid arterial branch from the inferior mesenteric artery (IMA) 1

This arterial branch usually forms an anastomosis with a branch of the superior rectal artery. The anastomosis is small and often only singular.

Related pathology

Sudeck point has particular relevance in colorectal surgery and also forms a watershed zone where the rectal wall is susceptible to ischemic colitis. That said, the Sudeck point is less susceptible to ischemia than the Griffiths point, thanks to the submucosal arterial plexus formed by branches of the superior, middle, and inferior rectal arteries.

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