31 Innominate

The innominate is made up of three bones which fuse late during the adolescent phase, including the ilium, ischium, and pubis. The bones fuse together at the center of the acetabulum, the fossa in which the femur articulates, each making up part of the articulation.

  • Ilium
    • Iliac crest
    • Greater sciatic notch
    • Lesser sciatic notch
    • Iliac tuberosity
    • Preauricular sulcus
    • Auricular surface
    • Iliac fossa
    • Anterior superior and inferior spines
  • Ischium
    • Ischial tuberosity
  • Pubis
    • Pubic symphyses

Structures formed by the intersection of the three bones of the innominate:

  • Obturator foramen
  • Acetabulum
    • Lunate face
    • Fossa

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Introduction to Human Osteology Copyright © 2010 by Roberta Hall; Kenneth Beals; Holm Neumann; Georg Neumann; and Gwyn Madden is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.

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