Published online Apr 18, 2019. doi: 10.5312/wjo.v10.i4.206
Peer-review started: January 4, 2019
First decision: January 26, 2019
Revised: February 18, 2019
Accepted: March 16, 2019
Article in press: March 16, 2019
Published online: April 18, 2019
Core tip: Allograft interbody spacers are commonly used in lumbar transforaminal lumbar interbody fusion procedures. A complication previously undocumented in the literature, we report on a fractured allograft interbody spacer that displaced into the neural foramen and resulted in impingement on the exiting nerve root that required revision. At 12 mo post-op, the patient was doing well with computed tomography scan confirming fusion and subsequent removal of the impinging fractured graft fragment. While presumably a rare occurrence, the authors review several technical points to avoid this complication.