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📌𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- / drgbhanuprakash 📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr 📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash Anatomy of the ischioanal (or ischiorectal) fossa Animation 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. Each ischioanal fossa is separated from the other by the anococcygeal body, but they do still communicate superiorly to this and posterior to the anal canal. Many textbooks and surgeons use the term ischiorectal fossa, however even a cursory review of the anatomy shows that the region is closely related to the anal canal, and not the rectum. Boundaries ------------------- roof: levator ani muscle floor: deep transverse perineal fascia medial wall: external anal sphincters/anal canal; levator ani muscle lateral wall: ischial tuberosity; obturator internus muscle; obturator fascia apex: intersection of the levator ani and obturator internus muscle base anteriorly: posterior border of the perineal body, urogenital diaphragm posteriorly: sacrotuberous ligament; gluteus maximus muscle Contents --------------- ischioanal (or ischiorectal) fat pad pudendal canal: lies in a fibrous sheath on the lateral wall and itself contains the pudendal nerve and internal pudendal vessels inferior rectal branches of the pudendal nerve posterior scrotal/labial nerves and vessels perineal branch of S4 perforating cutaneous nerve lymphatic trunks #ischioanalfossa #ischiorectalfossa #anatomy #usmle #nationalexittest #plab #usmlestep1 #mbbs #mbbsanatomy #anatomyofpelvis #anatomyofabdomenandpelvis