Fig. 4From: Comparison of the PEEK cage and an autologous cage made from the lumbar spinous process and laminae in posterior lumbar interbody fusionillustrates examples of a patient who underwent an L4/L5 PLIF with the PEEK cage: a preoperative MRI (a); lateral x-rays postoperative (b); and lateral radiographs at 12 months post-operatively, showing fusion at L4/L5Back to article page