I had that question in the back of my mind as I was beginning this journey and now I have an answer.  Once you know how to help them, I feel like it is not fair to leave them uneducated. Whether or not the horse can be ridden depends on how far the pathology has already progressed and how willing they are to move. The work, either under saddle or in hand, creates new healthy kinematics that will, at least, bring comfort, and at the most, stop the progress of pathology. Only through correct motion can this be done. Manual therapy can give temporary relief but may not have a lasting positive effect if not combined with motion therapy.