What are the contents of the ischioanal fossa?

The base is oriented inferiorly and posteriorly; it is delimitated by the gluteus maximus muscle and the sacrotuberous ligament, the coccyx, the anococcygeal raphe, the external anal sphincter, the posterior margin of the superficial perineal fascia, and the posterior border of the transversus superficialis muscle of …

What is Ischioanal space?

The ischioanal fossa (formerly called ischiorectal fossa) is the fat-filled wedge-shaped space located lateral to the anal canal and inferior to the pelvic diaphragm.

Is the pudendal nerve in the ischioanal fossa?

Pudendal Nerve It accompanies the internal pudendal artery through the lesser sciatic foramen into the pudendal (Alcock’s) canal on the lateral wall of the ischioanal fossa.

What is the superficial perineal fascia?

The superficial perineal fascia is attached to the margins of the ischiopubic rami at its lateral end and the posterior margin of the perineal membrane at its posterior end. At its anterior end, the fascia continues to line the skin of the urogenital triangle.

What is lunate fascia?

Lunate fascia: The subcutaneous fat raises the deep fascia in the region of ischiorectal fossa to form a dome shaped lunate fascia. Perianal space: Is between skin below and perianal fascia above.

What is the path of the pudendal nerve?

The pudendal nerve originates from the second through the fourth sacral nerves in the sacral plexus. It exits the pelvis through the greater sciatic foramen, crosses over the ischial spine, and then reenters the pelvis through the lesser sciatic foramen.

Where is the ischioanal fossa located in the human body?

The ischioanal (or ischiorectal) fossa is a fat-filled space of the perineum. Gross anatomy The ischioanal fossa is a paired triangular-shaped space lateral to the anal canal with an apex directed anteromedially towards the pubic symphysis.

What makes up the roof of the ischiorectal fossa?

This apex is where the levator ani and obturator internus muscles intersect. The roof of one of the ischiorectal fossae is formed by the obliquely coursing levator ani muscle, and the inferior fascia of the pelvic diaphragm.

How is the ischioanal fossa similar to perianal abscess?

Riyadh Mohammad Hasan, in New Concepts in the Management of Septic Perianal Conditions, 2018 The swelling will be most prominent over the ischioanal fossa, and drainage is similar to perianal abscess in regard to the site of incision, which should be over the most prominent and fluctuant area of the abscess.

Where is the fossa of the perineum located?

AboutBlogGo ad-free. Dr Daniel J Bell ◉ and Dr Henry Knipe ◉ ◈ et al. The ischioanal (or ischiorectal) fossa is a fat-filled space of the perineum. The ischioanal fossa is a paired triangular-shaped space lateral to the anal canal with an apex directed anteromedially towards the pubic symphysis.