posterior sacral foramen

(redirected from Posterior sacral foramina)
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posterior sacral foramen

One of the four pairs of openings on the posterior (dorsal) surface of the sacrum through which dorsal rami of the sacral roots pass. The posterior sacral foramina, which connect to the sacral canal via the sacral interventricular foramina, are smaller than the anterior sacral foramina.
Synonym: dorsal sacral foramen
See also: foramen
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