Ossification of the posterior longitudinal ligament (OPLL) over multiple levels with maintained cervical lordosis
- Multilevel cervical spondylosis with maintained cervical lordosis
- Congenital canal stenosis with maintained cervical lordosis
- Posterior compression from ligamentous hypertrophy with maintained cervical lordosis
Contraindications
- For single- or two-level spondylosis without developmental spinal canal stenosis
The Laminoplasty System is not to be used when there is:
- Established absolute kyphosis
- Isolated radiculopathy
- Focal anterior compression
- Loss of anterior column support resulting from tumor, trauma, or infection