sacral crest การใช้

In the middle line is the "'median sacral crest "', surmounted by three or four laminae of the corresponding vertebrae.
On the lateral aspect of the sacral groove is a linear series of tubercles produced by the fusion of the articular processes which together form the indistinct "'medial sacral crest " '.
The origins for the erector spinae muscle group are the nuchal ligament at the base of the back of the skull, ribs 3-12, thoracic and lumbar vertebrae, the thoracolumbar fascia, and the median and lateral sacral crests.