Girish Mahajan (Editor)

Ischioanal fossa

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Latin
  
fossa ischioanalis

TA
  
A09.5.04.001

Dorlands /Elsevier
  
12376209

FMA
  
22059

Ischioanal fossa

The ischioanal fossa (formerly called ischiorectal fossa) is the fat-filled space located lateral to the anal canal and inferior to the pelvic diaphragm. It is somewhat prismatic in shape, with its base directed to the surface of the perineum, and its apex at the line of meeting of the obturator and anal fasciae.

Contents

Boundaries

It has the following boundaries:

Contents

The contents include:

  • Inside Alcock's canal, on the lateral wall
  • internal pudendal artery
  • internal pudendal vein
  • pudendal nerve
  • Outside Alcock's canal, crossing the space transversely
  • inferior rectal artery
  • inferior rectal veins
  • inferior anal nerves
  • fatty tissue across which numerous fibrous bands extend from side to side allows distension of the anal canal during defecation

    • References

    Ischioanal fossa Wikipedia
    (Text) CC BY-SA