Our neck, also called the cervical spine, begins at the base of the skull and contains seven small vertebrae. Incredibly, the cervical spine supports the full weight of your head, which is on average about 12 pounds. While the cervical spine can move your head in nearly every direction, this flexibility makes the neck very susceptible to pain and injury.
The neck’s susceptibility to injury is due in part to biomechanics. Activities and events that affect cervical biomechanics include extended sitting, repetitive movement, accidents, falls and blows to the body or head, normal aging, and everyday wear and tear. Neck pain can be very bothersome, and it can have a variety of causes.
Here are some of the most typical causes of neck pain:
- Injury and Accidents: A sudden forced movement of the head or neck in any direction and the resulting “rebound” in the opposite direction is known as whiplash. The sudden “whipping” motion injures the surrounding and supporting tissues of the neck and head. Muscles react by tightening and contracting, creating muscle fatigue, which can result in pain and stiffness. Severe whiplash can also be associated with injury to the intervertebral joints, discs, ligaments, muscles, and nerve roots. Car accidents are the most common cause of whiplash.
- Some neck pain may be job related. Individuals who sit in the same position and face the same direction for long periods, such as secretaries and computer operators, may experience neck stiffness and/or muscular spasms. Other jobs, such as those involving the repetitive motions which are common in industry, may also lead to neck pain. Workers who operate a drill press, power equipment or continuous assembly line operations may feel fatigue and soreness in the supporting head-and-neck muscles. These and similar situations can bring on muscle tension and irritation of the nerves in the neck.
- Strains to the cervical vertebrae are another common cause of neck pain. Strains can be brought on by a forceful movement of the neck, strenuous lifting, swinging or pulling motions of the arms, or a fall.
- Osteoarthritis, a common joint disorder, causes progressive deterioration of cartilage. The body reacts by forming bone spurs that affect joint motion.
- Spinal stenosis causes the small nerve passageways in the vertebrae to narrow, compressing and trapping nerve roots. Stenosis may cause neck, shoulder, and arm pain, as well as numbness, when these nerves are unable to function normally.
- Degenerative disc disease can cause reduction in the elasticity and height of intervertebral discs. Over time, a disc may bulge or herniate, causing tingling, numbness, and pain that runs into the arm.
- Daily Life: Poor posture, obesity, and weak abdominal muscles often disrupt spinal balance, causing the neck to bend forward to compensate. Stress and emotional tension can cause muscles to tighten and contract, resulting in pain and stiffness. Postural stress can contribute to chronic neck pain with symptoms extending into the upper back and the arms.