Utility of intraoperative neurophysiological monitoring in detecting motor and sensory nerve injuries in pediatric high-grade spondylolisthesis.

dc.contributor.author

Iorio, Carlo

dc.contributor.author

Koucheki, Robert

dc.contributor.author

Strantzas, Samuel

dc.contributor.author

Vandenberk, Michael

dc.contributor.author

Lewis, Stephen J

dc.contributor.author

Zeller, Reinhard

dc.contributor.author

Camp, Mark

dc.contributor.author

Rocos, Brett

dc.contributor.author

Lebel, David E

dc.date.accessioned

2024-01-10T14:25:47Z

dc.date.available

2024-01-10T14:25:47Z

dc.date.issued

2023-12

dc.description.abstract

Background context

Intraoperative neuromonitoring (IONM) during surgical correction of spinal deformity has been shown to reduce iatrogenic injury in pediatric and adult populations. Although motor-evoked potentials (MEP), somatosensory-evoked potentials (SSEP), and electromyography (EMG) have been shown to be highly sensitive and specific in detecting spinal cord and nerve root injuries, their utility in detecting motor and sensory nerve root injury in pediatric high-grade spondylolisthesis (HGS) remains unknown.

Purpose

We aim to assess the diagnostic accuracy and therapeutic impact of unimodal and multimodal IONM in the surgical management of HGS.

Study design/setting

Retrospective cohort study.

Patient sample

Pediatric patients undergoing posterior spinal fusion (PSF) for treatment of HGS.

Outcome measures

Data on patient demographics, spinopelvic and spondylolisthesis parameters, and the presence of pre-and postoperative neurological deficits were collected.

Methods

Intraoperative MEP, SSEP, and EMG alerts were recorded. Alert criteria were defined as a change in amplitude of more than 50% for MEP and/or SSEP, with or without change in latency, and more than 10 seconds of sustained EMG activity. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy were calculated for each modality and the combination of MEP and SSEP. The 95% confidence intervals (CIs) were calculated using the exact (Clopper-Pearson) method.

Results

Fifty-four pediatric patients with HGS undergoing PSF between 2003 and 2021 in a single tertiary center were included. Seventy-two percent (39/54) of patients were female; the average age of patients was 13.7±2.3 years. The sensitivity of MEP in detecting new postoperative neurologic deficit was 92.3% (95% CI [64.0-99.8]), SSEP 77.8% (95% CI [40.0-97.2]), EMG 69.2% (95% CI [38.6-90.9]), and combination MEP and SSEP 100% (95% CI [73.5-100]). The specificity of MEP was 80.0% (95% CI [64.4-91.0]), SSEP 95.1% (95% CI [83.5-99.4]), EMG 65.9% (95% CI [49.4-79.9]), and combination MEP and SSEP 82.9% (95% CI [67.9-92.9]). The accuracy of SSEP was 92.0% (95% CI [80.8%-97.8%]), and the combination of MEP and SSEP was 86.8% (95% CI [74.7%-94.5%]). Twelve (22.2%) patients had a new motor or sensory deficit diagnosed immediately postoperatively. Nine patients made a full recovery, and 3 had some neurologic deficit on final follow-up.

Conclusion

Unimodal IONM using SSEP and MEP alone were accurate in diagnosing sensory and motor nerve root injuries, respectively. The diagnostic accuracy in predicting motor and sensory nerve injuries in pediatric HGS improved further with the use of multimodal IONM (combining MEP and SEP). We recommend the utilization of multimodal IONM in all HGS PSF surgeries.
dc.identifier

S1529-9430(23)03318-1

dc.identifier.issn

1529-9430

dc.identifier.issn

1878-1632

dc.identifier.uri

https://hdl.handle.net/10161/29680

dc.language

eng

dc.publisher

Elsevier BV

dc.relation.ispartof

The spine journal : official journal of the North American Spine Society

dc.relation.isversionof

10.1016/j.spinee.2023.08.002

dc.rights.uri

https://creativecommons.org/licenses/by-nc/4.0

dc.subject

Humans

dc.subject

Spondylolisthesis

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Radiculopathy

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Retrospective Studies

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Evoked Potentials, Motor

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Evoked Potentials, Somatosensory

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Adolescent

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Adult

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Child

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Female

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Male

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Peripheral Nerve Injuries

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Intraoperative Neurophysiological Monitoring

dc.title

Utility of intraoperative neurophysiological monitoring in detecting motor and sensory nerve injuries in pediatric high-grade spondylolisthesis.

dc.type

Journal article

duke.contributor.orcid

Rocos, Brett|0000-0002-0808-5585

pubs.begin-page

1920

pubs.end-page

1927

pubs.issue

12

pubs.organisational-group

Duke

pubs.organisational-group

School of Medicine

pubs.organisational-group

Clinical Science Departments

pubs.organisational-group

Orthopaedic Surgery

pubs.organisational-group

Neurosurgery

pubs.publication-status

Published

pubs.volume

23

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