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Several factors influential on subsidence after anterior cervical discectomy, fusion
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Factors such as cervical alignment, age and use of plates can affect subsidence after anterior cervical discectomy and fusion, according to study results.
The retrospective cohort study included 78 patients who underwent single-level anterior cervical discectomy and fusion between 2005 and 2011. The patients were categorized into two groups: subsidence and nonsubsidence. The researchers assessed clinical outcomes using VAS neck and arm pain scores.
Subsidence occurred in 26 of the 78 patients; mean time to subsidence was 4.8 months, and the fusion rate within the subsidence group was 61.5%, according to the researchers.
Through logistic regression analysis, the researchers found that age, use of plates and cervical alignment were shown to be most influential with regard to the occurrence of subsidence.
Additionally, risk of subsidence increased significantly in the kyphotic angle group compared with the lordotic angle group among patients who received a standalone cage, according to the researchers.
Disclosure: The authors have no relevant financial disclosures.
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