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Weakness of the Neck Muscles
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The neck is furnished by dozens ofmuscles for flexion, extension, lateral bending, and rotation. It carries a 10-pound head at least two-thirds of every day. These muscles are under delicate central control, and they are subject to different central and peripheral malfunctions. Differential involvement of the neck flexors versus extensors helps in diagnosing different neuromuscular disorders. Weakness of the cervical extensors leads to head drop, a troubling condition that is caused by many neuromuscular disorders. Movement disorders such as cervical dystonia and Parkinson disease may also lead to head drop, causing confusion with neuromuscular causes such as myasthenia gravis and ALS. Head protrusion of the elderly (camptocormia) is a different entity.
Title: Weakness of the Neck Muscles
Description:
The neck is furnished by dozens ofmuscles for flexion, extension, lateral bending, and rotation.
It carries a 10-pound head at least two-thirds of every day.
These muscles are under delicate central control, and they are subject to different central and peripheral malfunctions.
Differential involvement of the neck flexors versus extensors helps in diagnosing different neuromuscular disorders.
Weakness of the cervical extensors leads to head drop, a troubling condition that is caused by many neuromuscular disorders.
Movement disorders such as cervical dystonia and Parkinson disease may also lead to head drop, causing confusion with neuromuscular causes such as myasthenia gravis and ALS.
Head protrusion of the elderly (camptocormia) is a different entity.
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