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Pedicle screw fixation (L4/5). (A, D) Entry point is cross line of lateral border of the superior articular facet and center of the transverse process. (B, E) Screw go through 15°–25° at transverse pedicle angle. (C, F) L4 and L5 sagittal pedicle angle is each 0°, 5°–10° caudally declined.
