Summary: Anatomy: Pelvis

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  • 1 Bone

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  • What is the purpose of the wing of ilium?

    It is an attachment site for various muscles and a ligament
    - Lateral aspect: superficial gluteal, middle gluteal, deep gluteal
    - Medial aspect: Iliacus, sacroiliac ligament
    - Cranial aspect: tensor fasciia latae
  • What is the purpose of the ischial spine?

    It is an attachment site for the sacrosciatic ligament. When combined with the greater and lesser sciatic notches, they form greater and lesser sciatic foramen, respectively.
  • What is the purpose of greater and lesser sciatic foramen?

    - Greater: passage of sciatic nerve, cranial AND caudal gluteal arteries, veins, nerves
    - Lesser: passage of tendon for the internal obturator muscle
  • What is the purpose of the ischial tuber?

    It is an attachment site for the sacrotuberous ligament, which is an attachment site for extensor muscles such as biceps femoris. Not present in cats
  • What is the sacroiliac joint?

    It is a partially synovial, partially fibrous joint that connects sacrum to the medial wing of the ilium. It has shock absorption functions.
  • What is the pelvic symphysis?

    It is the midline of the pelvis, and a combination of pubic and ischial symphysis
  • What is the purpose of the obturator foramen?

    It is a cavity that is formed by ischium and pubis. It is covered by the obturator membrane and forms a small canal to allow obturator vein, artery, and nerve thorugh.
  • What is the acetabular labrum?

    It is a bony dorsal rim of the acetabulum that is extended by a cartilage lip (labrum), it helps prevent the subluxation of the femur
  • What is the transverse acetabular ligament?

    It is a ligament that keeps the hip joint within the acetabular fossa, on the lateral aspect
  • 1.1 Structure

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  • What is the pelvic canal?

    It is a space bounded by bony pelvis (ilium, pubis, ischium, pelvic symphysis) and sacrum

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