A rotated coffin
bone, which can result from several different causes, is a change in
the position of the coffin bone. The sensitive laminae which
normally hold the coffin bone firmly in place decay, allowing the
toe of the coffin bone to drop. This then presses on the sole, which
causes inflammation and changes to the laminae and bone of the toe.
New horn no longer grows in this region; only a secretion is
produced from the effected area. Eventually, as the sole is worn
away from below and the horn on the inside of the sole decays, the
tip of the coffin bone protrudes through the sole.
orthopedic treatment to prevent the protrusion of the coffin bone
and return it to its physiological position is to apply artificial
pressure from below. This is attempted by, for example, a padded bar
across the middle of the shoe.
affects only a slight rearward shift of the pressure point, back
from the tip of the coffin bone. The resultant alleviation of
pressure naturally brings relief, but this is only temporary. After
a while, inflammation sets in at the new pressure point, once again
causing lameness. By changing the type of shoe, alleviating the
pressure each time an acute inflammation occurs, a pain-free
situation can be achieved several times without any actual healing
having taken place. However, at some point, changing the type of
shoe will no longer help, because there is no healthy part of the
coffin bone left to which the pressure can be diverted.
In contrast to
this, healing can occur when the hoof, through correct trimming, is
returned to its optimal natural form, in which the mechanical action
of the hoof will resuscitate the laminae.