The withers are made up of the spinous processes
and the scapulas. The back is that part of the spine that is thoracic vertebrae but
does not constitute the high spinous processes of the withers. Or we sometimes talk about
the back extending from the low point of the withers to the last thoracic vertebrate – so
that’s the back of the horse. And then the loin is that area supported by the lumbar
vertebrate. The lumbar vertebrate can be determined by the lack of ribs attached to them.