60 years or older
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Previous cervical surgery for myelopathic signs and symptoms
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Cervical myelopathic symptoms and or signs at neurologic examination
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Solely radiculopathy, or most important complaint
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Stenosis of cervical spinal canal at MRI
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Unable to undergo MRI
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Lordotic shape at lateral cervical plain radiograph, or at lateral cervical radiograph in extension
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Life expectancy less than 2 years
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Informed consent
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Other diseases interfering with neurologic symptoms and signs, for example spinal cord glioma, thoracic herniated disc with spinal cord compression, multiple sclerosis etc.
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Rheumatoid arthritis
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Trauma to the neck in history
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Diseases interfering with rehabilitation, for example severe cardiac congestive disease.
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Participation in another study
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