Abstract:
STUDY DESIGN:A retrospective analysis of graft and plate complications after multilevel anterior cervical corpectomy and fusion (ACF) attributed to spondylosis, stenosis, and ossification of posterior longitudinal ligament was conducted. OBJECTIVE:To identify factors contributing to graft and plate complications in this population. SUMMARY OF BACKGROUND DATA:Biomechanical factors contributing to the increased morbidity associated with plated multilevel ACF were evaluated. METHODS:Graft- and/or plate-related complications were retrospectively reviewed in 33 patients undergoing two-level ACF reconstructions and in seven patients having three-level ACF reconstructions performed with iliac crest grafting and instrumentation with a fixed-plated design (cervical spine locking plate). Neurologic status was assessed before surgery and after surgery using both the Nurick Grading Scale and modified JOA (Japanese Orthopaedic Association) Score. The patients were observed an average of 31.4 months after surgery. The follow-up included lateral flexion and extension radiographs and a neurologic examination. RESULTS:Two of the 33 patients undergoing two-level fusions available for long-term follow-up after surgery developed reconstruction failures. All of the remaining fusions were successful, demonstrated by lateral flexion and extension radiographs. Seven patients had plated three-level corpectomy reconstructions. Five of the seven who had anterior-only reconstruction failed. DISCUSSION:A two-level ACF reconstruction is reliable with an anterior strut graft and fixed screw plate construct. A three-level ACF reconstruction is not reliably achieved with an anterior-only construct. The construct failures may be attributed in part to the fixed-plated design being used, as well as the long lever arm of the construct. CONCLUSION:There is a 6% failure rate after fixed-plated (cervical spine locking plate) two-level ACF reconstruction but a 71% failure rate after three-level fixed-plated ACF reconstruction. Future consideration should be given to simultaneous posterior fusion.
journal_name
Spine (Phila Pa 1976)journal_title
Spineauthors
Sasso RC,Ruggiero RA Jr,Reilly TM,Hall PVdoi
10.1097/00007632-200301150-00009keywords:
subject
Has Abstractpub_date
2003-01-15 00:00:00pages
140-2issue
2eissn
0362-2436issn
1528-1159journal_volume
28pub_type
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