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Table 1 Exclusion criteria for anterior cervical discectomy and DCI arthroplasty

From: Clinical and radiographic outcome of dynamic cervical implant (DCI) arthroplasty for degenerative cervical disc disease: a minimal five-year follow-up

Exclusion criteria
Segmental instability (intervertebral motion>11°or 3 mm)
Advanced degenerative changes (marked reduction or absence of intervertebral motion or height)
Facet joint arthrosis or spondylosis
Cervical kyphosis
Active infection
Osteoporosis
Inflammatory spondloarthropathies such as ankylosing spondylitis or rheumatoid arthritis
Expected cord edema and myelomalacia
Known allergy to titanium
Previous cervical spine surgery