Additionally, the average adult head weighs between 12-15lbs, for every inch of anterior head translation the work required by posterior cervical spine muscles is effectively increase by a factor of 10, leading to chronic muscle tension, muscle fatigue and pain.
With a loss or reversal of the normal cervical curve the increased weight on disc leads to degenerative disc disease. In a normal cervical spine approximately 1/3 of the weight of the head is loaded vertebral body and disc and 2/3rds is on the posterior column with the weight on the facet joints. Loss or reversals of cervical lordosis is also correlated to degenerative disc disease in the cervical spine. Hypolordosis (decreased neck curve) and cervical kyphosis (reversal of the normal cervical curve) have been associated with increased neck pain. Anterior head translation also has a strong correlation with temporal mandibular joint dysfunction. Anterior head translation (forward head posture) is correlated with increased likelihood of headaches, migraines, decreased cervical range of motion, chronic neck tension, etc. Once normal spinal alignment is defined then we can discuss the consequences of being abnormal. Integrative Sports Medicine out of the office and on the field!.
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