Fig. 2From: Biomechanical evaluation of strategies for adjacent segment disease after lateral lumbar interbody fusion: is the extension of pedicle screws necessary?ASD segment (L3/4) for each group was underwent: a LLIF + posterior extension of bilateral pedicle screw, b PLIF + posterior extension of bilateral pedicle screw, c LLIF + lateral screw, d Stand-alone LLIFBack to article page