Cervical epidural depth: Correlation between cervical mri measurements of the skin-to-cervical epidural space and the actual needle depth during interlaminar cervical epidural injections

Haitham Algrain, Alison Liu, Sarabdeep Singh, To-Nhu Vu, Steven P. Cohen

Research output: Contribution to journalArticle

Abstract

Objective. The purpose of this study was to assess the correlation between skin-To-epidural space depth, as measured on cervical magnetic resonance imaging (MRI), and actual needle depth, as measured by Tuohy needle markings during cervical epidural steroid injections. Methods. We conducted a retrospective review of cervical MRI images to determine estimated depth from skin to epidural space. Of the 121 reviewed patients who underwent cervical epidural steroid injections, 81 met inclusion criteria and were retained for data analysis. Results. At the C6-C7 level, the estimated needle depth according to MRI images was 6.0361.15 cm (mean6SD) and the actual needle depth was 5.6260.77 cm. At the C7-T1 level, the estimated needle depth based on MRI images was 5.9061.05cm and the actual needle depth was 5.7360.98cm. At both C6-C7 and C7-T1, MRI depth (P< 0.009, P< 0.001) and body mass index (P< 0.001, P< 0.002) were significantly associated with actual depth. Conclusions. Estimates of needle depth made with MRI were consistently slightly deeper than the actual loss-of-resistance needle depth, indicating that the provider should employ caution when using MRI predictive depths. Information garnered from preprocedure MRIs can be used to improve the safety of cervical epidural steroid injection procedures.

Original languageEnglish (US)
Pages (from-to)1015-1022
Number of pages8
JournalPain Medicine (United States)
Volume19
Issue number5
DOIs
StatePublished - May 1 2018

Fingerprint

Epidural Injections
Epidural Space
Needles
Magnetic Resonance Imaging
Skin
Steroids
Body Mass Index
Safety

All Science Journal Classification (ASJC) codes

  • Clinical Neurology
  • Anesthesiology and Pain Medicine

Cite this

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title = "Cervical epidural depth: Correlation between cervical mri measurements of the skin-to-cervical epidural space and the actual needle depth during interlaminar cervical epidural injections",
abstract = "Objective. The purpose of this study was to assess the correlation between skin-To-epidural space depth, as measured on cervical magnetic resonance imaging (MRI), and actual needle depth, as measured by Tuohy needle markings during cervical epidural steroid injections. Methods. We conducted a retrospective review of cervical MRI images to determine estimated depth from skin to epidural space. Of the 121 reviewed patients who underwent cervical epidural steroid injections, 81 met inclusion criteria and were retained for data analysis. Results. At the C6-C7 level, the estimated needle depth according to MRI images was 6.0361.15 cm (mean6SD) and the actual needle depth was 5.6260.77 cm. At the C7-T1 level, the estimated needle depth based on MRI images was 5.9061.05cm and the actual needle depth was 5.7360.98cm. At both C6-C7 and C7-T1, MRI depth (P< 0.009, P< 0.001) and body mass index (P< 0.001, P< 0.002) were significantly associated with actual depth. Conclusions. Estimates of needle depth made with MRI were consistently slightly deeper than the actual loss-of-resistance needle depth, indicating that the provider should employ caution when using MRI predictive depths. Information garnered from preprocedure MRIs can be used to improve the safety of cervical epidural steroid injection procedures.",
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Cervical epidural depth : Correlation between cervical mri measurements of the skin-to-cervical epidural space and the actual needle depth during interlaminar cervical epidural injections. / Algrain, Haitham; Liu, Alison; Singh, Sarabdeep; Vu, To-Nhu; Cohen, Steven P.

In: Pain Medicine (United States), Vol. 19, No. 5, 01.05.2018, p. 1015-1022.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Cervical epidural depth

T2 - Correlation between cervical mri measurements of the skin-to-cervical epidural space and the actual needle depth during interlaminar cervical epidural injections

AU - Algrain, Haitham

AU - Liu, Alison

AU - Singh, Sarabdeep

AU - Vu, To-Nhu

AU - Cohen, Steven P.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Objective. The purpose of this study was to assess the correlation between skin-To-epidural space depth, as measured on cervical magnetic resonance imaging (MRI), and actual needle depth, as measured by Tuohy needle markings during cervical epidural steroid injections. Methods. We conducted a retrospective review of cervical MRI images to determine estimated depth from skin to epidural space. Of the 121 reviewed patients who underwent cervical epidural steroid injections, 81 met inclusion criteria and were retained for data analysis. Results. At the C6-C7 level, the estimated needle depth according to MRI images was 6.0361.15 cm (mean6SD) and the actual needle depth was 5.6260.77 cm. At the C7-T1 level, the estimated needle depth based on MRI images was 5.9061.05cm and the actual needle depth was 5.7360.98cm. At both C6-C7 and C7-T1, MRI depth (P< 0.009, P< 0.001) and body mass index (P< 0.001, P< 0.002) were significantly associated with actual depth. Conclusions. Estimates of needle depth made with MRI were consistently slightly deeper than the actual loss-of-resistance needle depth, indicating that the provider should employ caution when using MRI predictive depths. Information garnered from preprocedure MRIs can be used to improve the safety of cervical epidural steroid injection procedures.

AB - Objective. The purpose of this study was to assess the correlation between skin-To-epidural space depth, as measured on cervical magnetic resonance imaging (MRI), and actual needle depth, as measured by Tuohy needle markings during cervical epidural steroid injections. Methods. We conducted a retrospective review of cervical MRI images to determine estimated depth from skin to epidural space. Of the 121 reviewed patients who underwent cervical epidural steroid injections, 81 met inclusion criteria and were retained for data analysis. Results. At the C6-C7 level, the estimated needle depth according to MRI images was 6.0361.15 cm (mean6SD) and the actual needle depth was 5.6260.77 cm. At the C7-T1 level, the estimated needle depth based on MRI images was 5.9061.05cm and the actual needle depth was 5.7360.98cm. At both C6-C7 and C7-T1, MRI depth (P< 0.009, P< 0.001) and body mass index (P< 0.001, P< 0.002) were significantly associated with actual depth. Conclusions. Estimates of needle depth made with MRI were consistently slightly deeper than the actual loss-of-resistance needle depth, indicating that the provider should employ caution when using MRI predictive depths. Information garnered from preprocedure MRIs can be used to improve the safety of cervical epidural steroid injection procedures.

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