apex of sacrum

a·pex of sa·crum

[TA]
the tapering lower end of the sacrum that articulates with the coccyx.
Synonym(s): apex ossis sacralis/sacri [TA]
References in periodicals archive ?
Similarly, at the caudal end, first coccygeal vertebra when fuses with the apex of sacrum is known as sacralization of coccygeal vertebra.
When first coccygeal vertebra fuses with the apex of sacrum, this process is known as sacralization of coccygeal vertebra [2,3].
The fifth pair of sacral foramina is generated either due to fusion of first coccygeal vertebra to apex of sacrum or fifth lumbar vertebra with first sacral vertebra.