Abstract
Purpose
To evaluate the clinical and radiological results of the operative management of three-column uncomplicated type «B» subaxial injures treated with a one-level cervical corpectomy with an expandable cage.
Methods
This study included 72 patients with a three-column uncomplicated type «B» subaxial injures who met the inclusion criteria, underwent a one-level cervical corpectomy with an expandable cage at one of three neurosurgical departments between 2005 and 2020, and were followed up for clinical and radiological outcomes at a minimum 3-yr follow-up.
Results
There was a decrease in the VAS pain score from an average of 80 mm to 7 mm (p = 0.03); a decrease in the average NDI score from 62 to 14% (p = 0.01); excellent and good outcomes according to Macnab’s scale were 93% (n = 67/72). There was an average change in the cervical lordosis (Cobb method) from −9.10 to −15.40 (p = 0.007), without significant loss of lordosis (p = 0.27). There was no significant degeneration of the adjacent levels by 3 years post-op. The fusion rate, using the Cervical Spine Research Society criteria, was poor: it was 62.5% (n = 45/72), and using the CT criteria, it was 65.3% (n = 47/72). 15.4% patients (n = 11/72) suffered complications. Statistical difference between the fusion and pseudoarthrosis (according to X-ray criteria) subgroups showed that there were no statistically significant differences in the smoking status, diabetes, chronic steroid use, cervical injury level, subtypes of AO type B subaxial injuries and types of expandable cage systems.
Conclusions
One-level cervical corpectomy with an expandable cage, despite a poor fusion rate, can be considered a feasible and relatively safe method for treating three-column uncomplicated subaxial type «B» injures, with the benefit of immediate stability, anatomical reduction, and direct decompression of the spinal cord. While no one in our series had any catastrophic complications, we did note a high complication rate.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by [VAB], [AAK], [EGB], [MAA], [BBS], [AVK], [YKD] and [VVS]. The first draft of the manuscript was written by [VAB], [AAK] and [KDR] and then all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Byvaltsev, V.A., Kalinin, A.A., Belykh, E.G. et al. Clinical and radiological outcomes of one-level cervical corpectomy with an expandable cage for three-column uncomplicated subaxial type «B» injures: a multicenter retrospective study. Eur Spine J 32, 1644–1654 (2023). https://doi.org/10.1007/s00586-023-07648-x
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DOI: https://doi.org/10.1007/s00586-023-07648-x