Thoracic anterior controllable antedisplacement fusion for thoracic ossification of the posterior longitudinal ligament: A case report

Figure 3 Operation flow chart. A: Patient lesion segment; B: Screw was placed in the diseased segment, two proximal segments and two distal segments. At this time, the screw is not completely screwed in; C: The lamina of the diseased segment was removed, and the upper and lower intervertebral discs of the diseased segment were removed; D: Place the connecting rod and lock it, and push the diseased segment forward.