Why vertical flexion affects lateral flexion
As a riding pupil, you might have learned to wait until you have vertical flexion before attempting to get lateral bend. Or you might have learned to create vertical flexion by asking for lateral bend. Veterinarian and anatomist Rikke Schultz and her colleagues found that the myofascial kinetic line for lateral flexion in the horse splits into two portions, one deep and one superficial. One describes lateral flexion and dorsal extension while the other flexes both vertically and laterally at the same time.