02/17/2026
When joint motion in the cervical spine is restricted, it does not just affect the neck.
It alters posture, shoulder freedom, and whole body coordination.
One of the most important muscles influenced by cervical mechanics is the longus colli, the deep stabilizer that supports the base of the neck and allows the horse to lift into self carriage.
Common signs of cervical dysfunction
Muscle asymmetry or hypertonicity
Stiffness or reduced neck range of motion
Altered head and neck carriage
Resistance through the bridle
Blocked shoulder motion
Heaviness in the contact
Why this matters for posture
When the upper cervical spine and cervicothoracic junction are restricted, the longus colli becomes inhibited.
This contributes to
• Dropping of the base of the neck
• Forward shifted weight and blocked shoulders
• Increased loading of the forehand
• Reduced ability to step under from behind
How chiropractic helps
Cervical adjustments restore joint motion and stimulate mechanoreceptors that regulate muscle tone and proprioception.
This reduces protective hypertonicity, improves neuromuscular signaling, and allows the longus colli to activate more effectively.
Restoring cervical mobility sets the foundation for meaningful progress with your Longus Colli Muscle Monday education and Therapy Thursday cervical retraction work.
Mobility first. Stability follows.
Save this post for reference.
Comment NECK if your horse drops the base of the neck or feels blocked in the shoulders.
Book a performance assessment if posture, contact, or shoulder freedom has changed.