ArticleSurgical neurology international2026
Early somatosensory evoked potential monitoring warnings during positioning for cervical laminoplasty in ossification of the posterior longitudinal ligament patients.
Article in Surgical neurology international, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
1 author.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Neurological deterioration during cervical laminoplasty for ossification of the posterior longitudinal ligament (OPLL) remains a significant clinical concern. This study evaluated the utility of somatosensory evoked potential (SEP) monitoring initiated immediately after anesthetic induction as an early warning system during surgical positioning. Methods: We retrospectively reviewed 63 consecutive patients with cervical OPLL who underwent laminoplasty (2023-2026). SEP monitoring of all four limbs was initiated in the supine position after induction to establish the intraoperative baseline. Alarm thresholds were 70% (caution) and 50% or below (critical) of baseline amplitudes in any monitored limb. Neurological status was assessed using the modified Japanese Orthopaedic Association (mJOA) scale. Results: Positioning-related SEP deterioration occurred in 8 patients (12.7%); all were detected before skin incision, and resolved following positional correction (i.e., typically in the opposite direction). No patient developed a permanent neurological deficit. Transient C5 palsy occurred in two patients in the no-SEP-change group that resolved within 3 weeks. All patients demonstrated mJOA improvement at 3 months. Conclusion: SEP monitoring detected significant changes during positioning for laminoplasty in 12.7% of OPLL patients, all of which resolved in a timely fashion.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.