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Common Iliac Divisions
Internal and External
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External Iliac Branches
Deep circumflex Iliac and the Inferior Epigastrics
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Internal Iliac
- from the common iliac
- -passes over the pelvic brim
- -Main blood supply to pelvic organs, gluteal muscles and perineum
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Anterior division of internal iliac artery
passes anteriorly and divides into visceral branches and obturator artery
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Umbilical artery
- anterior division of internal iliac
- ends as superior vesicular artery in females
- supplies superior aspect of urinary bladder on females and ductus deferens in males
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Obtorator
off anterior internal iliac
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superior vesicular artery
patent portion of umbilical artery
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artery to ductus deferens
branch of vesical artery
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inferior vesical
anterior division of internal iliac
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middle rectal
anterior division of internal iliac
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internal pidendal
- anterior division of internal iliac
- leaves through greater sciatic foramen
- enters perineum through lesser sciatic foramen
- main artery to perineum,
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inferior gluteal
- anterior division of internal iliac
- leaves through greater sciatic foramen
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Uterine
- anterior division of internal iliac
- runs medially to levator ani and crosses ureter to reach base of broad ligament
- pelvic part of ureter, uterus, ligament of uterus, uterine tube, and vagina
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vaginal
- uterine artery branch
- vaginal and inferior urinary bladder
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gonadal
- abdominal aorta
- testicular passes into dee inguinal ring
- testies and overie
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posterior division of internal iliac
- gives rise to parietal branches
- pelvic wall and gluteal region
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iliolumbar
- posterior division of internal iliac
- iliacus, psoas major, quadratus lumborum , and cauda equina
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lateral sacral
- posterior division of internal iliac artery
- on superficial aspect of piriformis
- piriformis and vertebral canal
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superior gluteal
anterior division of internal iliac
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Important Considerations with Arteries
- •Sequence of branching of internal iliac is
- most variable of all arteries
- •The most constant feature of internal iliac
- artery is its variability
- •Female always has inferior vesical
- artery; origin can be vaginal, middle rectal or internal iliac; vaginal artery
- does not “replace” inferior vesical, but is the “ORIGIN”
- •“Abnormal” obturator artery – arises from external iliac –
- potential problem with repair of femoral hernia
- •Middle rectal artery – often arises from
- internal pudendal
- artery
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