Anatomy Explorer
Acetabulum
by
Written by
Tim Taylor
Anatomy & Physiology Senior Writer
Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.
Last updated: Feb 21st, 2026
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The acetabulum is a cup-like depression ball and socket joint. The ilium, the ischium, and the pubis bones form it.
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