Laminoplasty Techniques for the Treatment of Multilevel Cervical Stenosis
Figure 10
In the double-door laminoplasty technique, a high-speed burr is used to split the spinous processes in the midline (a). The burr is then used to create troughs bilaterally at the junction of the lamina and lateral mass, as shown in (b) and (c). The hemilaminae are separated at the midline with a laminar spreader and elevated (d). The expanded canal is then held in the open position with either bone graft or ceramic/hydroxyapatite spacers (e).
