I am fond of saying that the toe defines the heel
Click on the graphic for more.
What is so singular about the club foot? The effect it produces in stride is predictable. The effect it has on hoof shape is predictable. The effects it has on the horse who hosts it are predictable.
This handy-dandy Bump Checker can win you lots of bets. All you need do is bet somebody that the difference between the heights of the bumps on the sides of the right and left knees is equal to the difference between the heights of the heels of the right and left feet.
If you loosen the set screw (not shown) on the back of the checker you can slide it along the stick until the knotch fits onto one of the bumps on the side of the knee of the horse. Tighten the set screw and move the Checker to the other knee for comparison.
Use your brain when you do something like this. This exercise is about OBSERVING. It is not required that horses be made "even". Making a horse "even" can have grave consequences. Equilibration was a big deal a while ago. It made some lame horses sound and even, but it made many horses lame and sore. If you have good cause to expect "evening" your horse will help him, do it. But watch him close. Let it work if it's going to work, but don't force it.
Have the horse on a smooth, clean, level work area. Look at the horse for reasons that things are the way they are. DON'T BE CUTTING ON A HORSE UNLESS YOU KNOW WHAT YOUR ARE DOING!!!
Normally we are concerned about the length of toe compared to the length of heel.
I like to cut and paste paper. You should try it. If you print the normal foot above you can cut out the parts like I have done here. With the parts you can remake the foot. I reassembled the parts to create the club foot below
With the club foot it's the length of heel that's interesting. The heel doesn't so much define the toe as it does the angle of P3. The blue line indicates the angle created by lifting the back of the foot to it's new height.
It's not surprizing that the distal border of P3 is subjected to chronic bruising. I believe this is the source of pedalosteitis, not DDF tension
This approach to trimming the club foot may seem at first to have the effect of shortening the to, but the actual length of the toe has been substantialy increased. The red line represents the cut I would make on such a foot. It happens that the red and blue lines are parallel.
Lowering the heels is one way to reestablish pastern axis.
Maybe you need a Bump Checker!