Abstract
Purpose
Clinical outcome of spinal cavernous malformation (SCM) varies because of its unclear natural history, and reliable prognostic prediction model for SCM patients is limited. The aim of the present study was to investigate potential factors that predict one-year neurological status in postoperative patients with SCM.
Methods
This was a multicenter prospective observational study in consecutive patients with SCMs. SCMs treated microsurgically between January 2015 and January 2021 were included. Outcome was defined as the American Spinal Injury Association Impairment Scale (AIS) grade at one year after operation. Multivariable analyses were used to construct the best predictive model for patient outcomes.
Results
We identified 268 eligible SCM patients. Neurological outcome had worsened from preoperative baseline in 51 patients (19.0%) at one year. In the multivariable logistic regression, the best predictive model for unfavorable outcome included symptom duration ≥ 26 months (95% CI 2.80–16.96, P < 0.001), size ≤ 5 mm (95% CI 1.43–13.50, P = 0.010), complete intramedullary (95% CI 1.69–8.14, P = 0.001), subarachnoid hemorrhage (95% CI 2.92–12.57, P < 0.001), AIS B (95% CI 1.91–40.93, P = 0.005) and AIS C (95% CI 1.12–14.54, P = 0.033).
Conclusions
Admission size of the lesion, morphology, symptom duration, AIS grade and the presence of subarachnoid hemorrhage were strong outcome predictors regarding prognostication of neurological outcome in postoperative patients with SCMs. A decision to surgically remove a symptomatic SCM should be justified by systematic analysis of all factors potentially affecting outcome.
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Acknowledgements
We thank Mrs Xiao Zheng, Mrs Zheling Zhao for collecting and sorting the follow-up data. Drs Hongtao Rong and Zhenying Han contributed substantially to the conception or design of the work. Drs Yongli Wang and Fanjian Li were involved in data acquisition. Drs Ye Tian, Yingsheng Wei and Jinhao Huang analyzed and interpreted the data. All authors were involved in drafting the work or revising it critically for important intellectual content, approved the final version to be published, and in agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved. This study is supported by the Young Scientists Award 82022020 from the National Natural Science Foundation of China (ZLZ), the National Natural Science Foundation of China 81971176 (ZLZ)
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Liu, T., Wang, L., Zhang, S. et al. Prediction of outcomes for symptomatic spinal cavernous malformation surgery: a multicenter prospective clinical study. Eur Spine J 32, 1326–1333 (2023). https://doi.org/10.1007/s00586-023-07585-9
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DOI: https://doi.org/10.1007/s00586-023-07585-9