"non-union: lack of osseous bridging at 6 months post-operation 3"
"osteolysis with PEEK cages 3"
Expected headings
"Positioning"
"Follow-up"
"autogenous bone graft (e.g. from the anterior iliac crest of the patient harvested at the same time as the fusion is performed)"
"allogeneic bone graft (e.g. from cadaveric iliac bone or fibula)"
"animal allogeneic bone graft (e.g. bovine or calf)"
"metal (e.g. titanium or stainless steel)"
"from angioedema (6-12 hours), retropharyngeal haematoma (6-24 hours), pharyngolaryngeal oedema (24-72 hours), and/or retropharyngeal abscess (>72 hours) 11"