Fig. 4From: Cortical screw placement with a spinous process clamp guide: a cadaver study accessing accuracyA CT scan location image; B the first layer of 1.5 mm K-wires in L4 vertebrae; C the second layer of 1.5 mm K-wires in L4 vertebrae and pedicle; D the third layer of 1.5 mm K-wires in L4 pedicleBack to article page