CHIROPRACTIC & HEALTH
A Natural Connection
© The Wellness Practice © Dr. James L. Chestnut M.Sc, D.C., C.C.W.P.
Ph.D. in Biomechanics Explains Importance of Segmental Motion and Chiropractic
McGill, S. Ph.D. Stability: From Biomechanical Concept to Chiropractic Practice. Journal of Canadian Chiropractic Association. 1999;43 (2)
QUOTE BOARD: “There is evidence that these muscles (intersegmental muscles) are highly rich in muscle spindles (at least four to seven times higher than multifidus). It would seem that these organs are not functioning to produce force given their minimal cross-sectional area but are, rather, position transducers for each lumbar joint enabling the motor control system to control overall lumbar posture and avoid injury.” Conclusion: “Nonetheless it appears that the chance of the motor control error which results in a short and temporary reduction in activation to one of the intersegmental muscles would cause rotation of just a single joint to a point where passive or other tissues become irritated or possible injured.” [This is segmental neuromuscular dysfunction (vertebral subluxation complex/joint dysfunction)]
Without proper segmental motion in your spinal segments the messages from the joint and muscle motion receptors get interrupted making it impossible for your brain to sense joint position and/or muscle length/tension. This “garbage in” creates errors in brain output (garbage out) called motor control errors. Your brain can only properly coordinate joint and muscle position and movement if proper signals from the joints and muscles get sent to the brain. Proper segmental motion is the key component for the delivery of proper joint and muscle signals.
Key Take Home Points:
Without proper segmental motion in your spine the messages between body and brain become diminished and/or distorted. Not only do the tissues become inflamed and begin to degenerate but the brain becomes less able to coordinate movement and motor control errors result which predisposes the tissues to injury. Chiropractic is so effective because it restores segmental motion and thus restores the proper communication between body and brain. This allows for better coordination of movement, the reduction of motor control errors, and less susceptibility to injury. A healthy spine requires proper segmental motion. Chiropractors are the world’s leading experts in detecting and correcting areas of segmental neuromuscular dysfunction and this is why chiropractic is so effective for spinal health.