Fig. 3

a: Select the lamina on the side with more severe symptoms as the incision side. Use a drill to create a bony groove 3 mm from the inner edge of the bilateral laminae. Grind the lamina open from the cortical bone to the dural sac, while creating a “V”-shaped bony groove on the contralateral lamina as a hinge for the door axis. b: Elevate the lamina towards the hinge side and drill holes at the base of the spinous processes of C3, C5, and C7. c: At C4 and C6, select appropriately sized micro titanium plates, fix them onto the spinous processes and posterior laminae, and reinforce them with self-tapping screws. d: Drill holes at the base of the spinous processes of C3, C5, and C7. Pass sutures through the bone holes and secure them to the adjacent C4 or C6 micro titanium plate spinous process fixation points, forming upward diagonal tension to fix the micro titanium plates together with the adjacent spinous processes