Fig. 5.

Preoperative lumbar anteroposterior (AP) (A) and lateral (B) plain films of a 68-year-old female with lateral recess stenosis and retrolisthesis at L3/4 due to adjacent segment disease following a prior L4/5 transforaminal lumbar interbody fusion. The patient underwent uneventful standalone lordotic endoscopic wedge lumbar interbody fusion at L3/4. She did well initially but fell at 6 weeks postoperatively when walking her dog. She developed sudden onset of new back pain and right leg anteromedial thigh pain consistent with L3 radiculopathy. Postoperative AP (C) and lateral (D) plain films showed posterolateral dislocation of the cage with extrusion through the transforaminal surgical tract. The patient improved immediately after removal of the implant and placement of bone graft into the interspace.