The spinal column of the horse is a complex structure made up of bones, ligaments, muscles and nerves. When movement between two vertebrae is restricted, the horse will not have total flexibility of the spine. This leads to stiffness, resistance and lack of ability. When the spine is not functioning correctly in one area, stress is placed on other vertebral joints.
Misalignment also causes problems in nerves by interfering with nerve transmissions. Nerves are the communication lines of the body carrying information back and forth between the brain and the cells. Alteration to nerves can lead to problems such as pain, abnormal posture and poorly coordinated movement.