Peter was holding the obturator foramen. The large opening fo the hip bone through which blood vessels and nerves pass.
Work Step by Step
The obturator foramen is outlined in red in the picture.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.