Radicular Arm Pain and the Upper Cervical Spine
In the upper cervical spine, there are four main structures to focus on. They are:
The Foramen Magnum of the Occipital bone
The Atlas vertebra (1st cervical bone)
The Axis vertebra (2nd cervical bone)
The Brainstem of the Nerve System.
The Brainstem exits from the Foramen Magnum. The Atlas and Axis bones protect and surround the Brainstem. The brainstem connects all the nerves from the brain to the nerves of the body.
Regarding Radicular Arm Pain the secondary focus is on the Brachial Plexus nerve structure.
The Brachial Plexus is a network of nerves formed by the lower four cervical nerves and the first thoracic nerve (C5, C6, C7, C8, and T1). This plexus extends from the spinal cord, travels through the neck, over the first rib, and into the armpit. It supplies nerve information to the chest, shoulder, arm, forearm, and hand.
The Nerve System in general has four main functions:
It controls all the movements we make
Senses everything we feel
Regulates all our body organs
Relates us to the outside world
When nerves get stressed, it effects their sensitivity, perception and behavior to perform these functions. There are three types of stresses we deal with in life. The stresses are physical, chemical and emotional in nature. These stresses create nerve tension and spine imbalance.
One specific job of the brainstem is to adapt to these stresses and help bring the spine back into balance. If the stresses are too great for the brainstem to adapt, compensations arise. One particular compensation that occurs in the upper cervical spine is a vertebral subluxation.
A vertebral subluxation will cause the Atlas and Axis bones to get locked in a misaligned position. This lock will perpetuate spine imbalance and Nerve System tension. This tension will lead to abnormal sensitivity, perception and behavior of the brainstem and connecting nerves. Nerve System function is disrupted.
Over time, this disruption can lead to symptoms of the involved nerves. The usual symptoms of Radicular Arm Pain are:
Pain that spreads into the arm, neck, chest, upper back and/or shoulders
Numbness or tingling in fingers or hands
Muscle weakness, lack of coordination, or the loss of reflexes in your arms