X-ray of a 60 year old woman, showing <a href="https://en.wikipedia.org/wiki/Lumbarization" class="extiw" title="en:Lumbarization">lumbarization</a> of <a href="https://en.wikipedia.org/wiki/Sacrum" class="extiw" title="en:Sacrum">sacral vertebra 1</a>, seen as 6 vertebrae that do not not connect to <a href="https://en.wikipedia.org/wiki/rib" class="extiw" title="en:rib">ribs</a>.
<a href="//commons.wikimedia.org/wiki/User:Mikael_H%C3%A4ggstr%C3%B6m" title="User:Mikael Häggström">Mikael Häggström</a>
2017-01-09
<span class="int-own-work" lang="en">Own work</span>