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 patients

The aim of the study was to compare the accuracy of percutaneous pedicle screw (PPS) insertion (Pside) with that of conventional open screw insertion (O-side) during unilateral open transforaminal lumbar interbody fusion (TLIF) in the same patients.