article_snippet: Dr Lewis Dr Lewis said: 'One can think of vertebrae that aren't wedged like (ice) hockey pucks - (ice) hockey pucks are the same height in the front and the back,' Dr Lewis said. '
article_snippet: A dorsally wedged vertebra, on the other hand, is taller in the front of the body than the body is in the back. '
article_snippet: When you stack hockey pucks on top of and underneath a vertebra that is taller in the front than it is in the back, you end up with a curved stack.'