Fig. 2From: Accuracy of pedicle screw insertion for unilateral open transforaminal lumbar interbody fusion: a side-by-side comparison of percutaneous and conventional open techniques in the same patientsPercutaneous pedicle screw insertion. a The targeting needle is inserted into the pedicle under C-arm fluoroscopic guidance. b The targeting needle is inserted on a fluoroscopic axial view. c Surgical traceBack to article page