Efficacy of Two Approaches in Cervical Single-door Laminoplasty for Spinal Canal Enlargement

The cervical laminoplasty via intermuscular space approach will apply bilateral blunt dissection to create the operative space between capital semispinalis muscle and cervical semispinalis muscle

The cervical laminoplasty via the conventional approach will apply median dissection of the cervical spinous ligament and seperate muscles to expose the whole lamina of cervical vertebrae.