Pelvic Inlet - Boundaries

Boundaries

The edge of the pelvic inlet (pelvic brim) is formed as follows:

Anteriorly
by the pubic crest (or pubic symphysis)
Laterally
by the iliopectineal line
(same as other side)
Posteriorly
by the anterior margin of the base of the sacrum (or the ala of sacrum) and sacrovertebral angle (or sacral promontory)

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