Abstract
Adjacent segment disease (ASD) was described after long-term follow-up of patients treated with cervical fusion. The term describes new-onset radiculopathy or myelopathy referable to a motion segment adjacent to previous arthrodesis and often attributed to alterations in the biomechanical environment after fusion. Evidence suggests that ASD affects between 2% and 3% of patients per year. Although prevention of ASD was one major impetus behind the development of motion-sparing surgery, the literature does not yet clearly distinguish a difference in the rate of ASD between fusion and disk replacement. Surgical techniques during index surgery may reduce the rate of ASD.
Copyright © 2012 Elsevier Inc. All rights reserved.
MeSH terms
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Aged
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Cervical Vertebrae / diagnostic imaging
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Cervical Vertebrae / pathology
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Cervical Vertebrae / surgery*
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Decompression, Surgical / adverse effects*
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Decompression, Surgical / methods
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Female
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Follow-Up Studies
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Humans
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Intervertebral Disc / surgery*
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Male
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Middle Aged
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Patient Selection
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Postoperative Complications / diagnosis
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Postoperative Complications / surgery
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Preoperative Care
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Radiculopathy / etiology
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Radiculopathy / surgery
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Radiography
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Recurrence
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Reoperation / methods
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Risk Assessment
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Spinal Cord Diseases / etiology
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Spinal Cord Diseases / surgery
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Spinal Fusion / adverse effects*
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Spinal Fusion / methods
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Spondylosis / diagnosis
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Spondylosis / surgery*
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Time Factors
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Total Disc Replacement / methods*
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Treatment Outcome