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Table 1 Inclusion – and exclusion criteria

From: Design of the PROCON trial: a prospective, randomized multi – center study comparing cervical anterior discectomy without fusion, with fusion or with arthroplasty

Inclusion Exclusion
Age: 18 – 55 years Symptoms and/or signs of myelopathy
Cervical monoradicular symptoms Previous cervical surgery
MRI: herniated cervical intervertebral disc and/or osteophyte in accordance with clinical symptoms and signs Psychiatric or mental disease
Involved level not fused Involvement of liability procedure
  Alcoholism (drinking more than 5 units)
  Insufficient of the Dutch language
  Participation in another study
  Two or more levels involved