title: Delayed perforation of posterior pharyngeal wall caused by dislodged bioresorbable interbody cage. Case report.
abstract: A 48-year-old man was admitted for the management of congenital anomalies: Arnold-Chiari type I malformation combined with odontoid upward migration. He also had degenerative stenosis of the spinal canal by spurs at C2/C3 and C3/C4 levels. Osseous deformities caused ischaemic changes of the brainstem as well as spinal cord compression. Authors used the Biocage - interbody cage covered by bioresorbable layer to fill the surgically created gap after removal of the right part of C3 vertebral body. Twenty-seven months after implantation, the implant was extruded through posterior pharyngeal wall. Authors describe this unusual case and discuss possible causes of Biocage extrusion.
authors.affiliation: Department of Neurosurgery and Peripheral Nerve Surgery, Medical University of Łódź, University Hospital WAM-CSW, Łódź, Poland. Electronic address: krzysztofzapalowicz1@wp.pl.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Zapałowicz
authors.affiliation: Department of Neurosurgery and Peripheral Nerve Surgery, Medical University of Łódź, University Hospital WAM-CSW, Łódź, Poland.
authors.forename: Maciej
authors.initials: M
authors.lastname: Radek
authors.affiliation: Department of Neurosurgery and Peripheral Nerve Surgery, Medical University of Łódź, University Hospital WAM-CSW, Łódź, Poland.
authors.forename: Maciej
authors.initials: M
authors.lastname: Wojdyn
authors.affiliation: Department of Otolaryngology and Laryngological Oncology, Medical University of Łódź, University Hospital WAM-CSW, Łódź, Poland.
authors.forename: Piotr
authors.initials: P
authors.lastname: Pietkiewicz
authors.affiliation: Department of Otolaryngology and Laryngological Oncology, Medical University of Łódź, University Hospital WAM-CSW, Łódź, Poland.
authors.forename: Jurek
authors.initials: J
authors.lastname: Olszewski
mesh_terms: D001139:Arnold-Chiari Malformation / Q000473:pathology / Q000601:surgery*; D001705:Bioprosthesis / Q000009:adverse effects / Q000592:standards; D002574:Cervical Vertebrae / Q000601:surgery; D019544:Equipment Failure Analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010614:Pharynx / Q000293:injuries*; D011475:Prosthesis Failure / Q000009:adverse effects*; D013997:Time Factors
keywords: Anterior cervical fusion; Biomaterials; Cervical interbody cage; Complication; Pharyngeal perforation