This dissection shows how the collateral groove is distorted upwards into the hoof (yellow line left). In relation to that you can see how long and incorrectly proportioned the bar is. The green line shows how the bar should run and where the bottom of the collateral groove should be. The yellow line is too close to the DDFT and the Navicular Bone and the full bar blocks the horn movement in that area. The result: horse with heel pain. Barefoot trimming should work towards the green line to get the horse comfortable again. This means one has to trim for change, not maintenance in a case like this.
