Obturator internus muscle

Last revised by Craig Hacking on 25 Aug 2021

The obturator internus muscle, like the piriformis muscle, is both a muscle of the pelvic wall and of the gluteal region. It originates within the pelvis, and continues as a flattened tendon posteriorly through the lesser sciatic foramen (between ischial spine and tuberosity).


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Cases and figures

  • Figure 1: obturator internus (Gray's illustration)
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