Fig. 5From: Free-hand technique of C7 pedicle screw insertion using a simply defined entry point without fluoroscopic guidance for cervical spondylotic myelopathy patients with C3 to C6 instrumented by lateral mass screws: a retrospective cohort studyThe entry point of C7 pedicle screw insertion through trajectory B was keep in line with the entry points of lateral mass screws from C3 to C6, which facilitated the rod insertionBack to article page