promontory of the sacrum


sa·cral prom·on·to·ry

[TA] the most prominent anterior projection of the base of the sacrum. Synonym(s): promontorium ossis sacri [TA], pelvic promontory, promontory of the sacrum

promontory of the sacrum

The anterior projecting portion of the pelvic surface of the base of the sacrum. With the fifth lumbar vertebra, it forms the sacrovertebral angle. See also: promontory