Changes in the cross-sectional area of deep posterior extensor muscles of the cervical spine after anterior decompression and fusion

10-year follow-up study using MRI

Morio Matsumoto, Eijiro Okada, Daisuke Ichihara, Koota Watanabe, Kazuhiro Chiba, Yoshiaki Toyama, Hirokazu Fujiwara, Suketaka Momoshima, Yuji Nishiwaki, Takeshi Hashimoto, Akio Iwanami, Takeshi Ikegami, Takeshi Takahata

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Purpose To evaluate changes in the transverse area of deep posterior muscles of the cervical spine 10 years after anterior cervical decompression and fusion (ACDF), in comparison with healthy volunteers. Methods Thirty-one patients (22 males, 9 females, mean age at follow-up 59.3 years, mean follow-up 12.1 years) who had undergone preoperativeMRI and non-instrumented ACDF within levels C3-4 to C5-6 were enrolled. 32 asymptomatic volunteers (17 males, 15 females; mean age, 54.7 years; mean follow-up, 11.7 years) who underwent MRI between 1993 and 1996 served as controls. Follow-up MRI was performed on both patients and control subjects, and the cross-sectional areas of deep posterior muscles were measured digitally at levels C3-4, 4-5, and 5-6. Results The mean total cross-sectional area in the ACDF and control groups was 4,693.6 ± 1,140.9 and 4,825.8 ± 1,048.2 mm 2 in the first MR study (P = 0.63), and 4,616.7 ± 1,086.0 and 5,036.7 ± 1,105.6 mm 2 at followup (P = 0.13). The total cross-sectional area in the ACDF group slightly decreased, while that in the control group increased (-77.1 ± 889.7 vs. 210.9 ± 622.0 mm 2, P = 0.14). The mean change in the cross-sectional area had no significant correlation with clinical symptoms, including neck pain or JOA score. Conclusions ACDF patients did not show a marked decrease in the cross-sectional area of the deep posterior cervical muscles, but as compared with control subjects there was a slight decrease. A decrease in the cross-sectional area of these muscles after ACDF may not result in the axial symptoms as seen in patients treated by posterior surgery.

Original languageEnglish
Pages (from-to)304-308
Number of pages5
JournalEuropean Spine Journal
Volume21
Issue number2
DOIs
Publication statusPublished - 2012 Feb

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Decompression
Spine
Muscles
Control Groups
Neck Pain
Volunteers
Healthy Volunteers

Keywords

  • Anterior decompression and fusion
  • Cervical spine
  • MRI
  • Posterior extensor muscle

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine
  • Medicine(all)

Cite this

Changes in the cross-sectional area of deep posterior extensor muscles of the cervical spine after anterior decompression and fusion : 10-year follow-up study using MRI. / Matsumoto, Morio; Okada, Eijiro; Ichihara, Daisuke; Watanabe, Koota; Chiba, Kazuhiro; Toyama, Yoshiaki; Fujiwara, Hirokazu; Momoshima, Suketaka; Nishiwaki, Yuji; Hashimoto, Takeshi; Iwanami, Akio; Ikegami, Takeshi; Takahata, Takeshi.

In: European Spine Journal, Vol. 21, No. 2, 02.2012, p. 304-308.

Research output: Contribution to journalArticle

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title = "Changes in the cross-sectional area of deep posterior extensor muscles of the cervical spine after anterior decompression and fusion: 10-year follow-up study using MRI",
abstract = "Purpose To evaluate changes in the transverse area of deep posterior muscles of the cervical spine 10 years after anterior cervical decompression and fusion (ACDF), in comparison with healthy volunteers. Methods Thirty-one patients (22 males, 9 females, mean age at follow-up 59.3 years, mean follow-up 12.1 years) who had undergone preoperativeMRI and non-instrumented ACDF within levels C3-4 to C5-6 were enrolled. 32 asymptomatic volunteers (17 males, 15 females; mean age, 54.7 years; mean follow-up, 11.7 years) who underwent MRI between 1993 and 1996 served as controls. Follow-up MRI was performed on both patients and control subjects, and the cross-sectional areas of deep posterior muscles were measured digitally at levels C3-4, 4-5, and 5-6. Results The mean total cross-sectional area in the ACDF and control groups was 4,693.6 ± 1,140.9 and 4,825.8 ± 1,048.2 mm 2 in the first MR study (P = 0.63), and 4,616.7 ± 1,086.0 and 5,036.7 ± 1,105.6 mm 2 at followup (P = 0.13). The total cross-sectional area in the ACDF group slightly decreased, while that in the control group increased (-77.1 ± 889.7 vs. 210.9 ± 622.0 mm 2, P = 0.14). The mean change in the cross-sectional area had no significant correlation with clinical symptoms, including neck pain or JOA score. Conclusions ACDF patients did not show a marked decrease in the cross-sectional area of the deep posterior cervical muscles, but as compared with control subjects there was a slight decrease. A decrease in the cross-sectional area of these muscles after ACDF may not result in the axial symptoms as seen in patients treated by posterior surgery.",
keywords = "Anterior decompression and fusion, Cervical spine, MRI, Posterior extensor muscle",
author = "Morio Matsumoto and Eijiro Okada and Daisuke Ichihara and Koota Watanabe and Kazuhiro Chiba and Yoshiaki Toyama and Hirokazu Fujiwara and Suketaka Momoshima and Yuji Nishiwaki and Takeshi Hashimoto and Akio Iwanami and Takeshi Ikegami and Takeshi Takahata",
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T2 - 10-year follow-up study using MRI

AU - Matsumoto, Morio

AU - Okada, Eijiro

AU - Ichihara, Daisuke

AU - Watanabe, Koota

AU - Chiba, Kazuhiro

AU - Toyama, Yoshiaki

AU - Fujiwara, Hirokazu

AU - Momoshima, Suketaka

AU - Nishiwaki, Yuji

AU - Hashimoto, Takeshi

AU - Iwanami, Akio

AU - Ikegami, Takeshi

AU - Takahata, Takeshi

PY - 2012/2

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N2 - Purpose To evaluate changes in the transverse area of deep posterior muscles of the cervical spine 10 years after anterior cervical decompression and fusion (ACDF), in comparison with healthy volunteers. Methods Thirty-one patients (22 males, 9 females, mean age at follow-up 59.3 years, mean follow-up 12.1 years) who had undergone preoperativeMRI and non-instrumented ACDF within levels C3-4 to C5-6 were enrolled. 32 asymptomatic volunteers (17 males, 15 females; mean age, 54.7 years; mean follow-up, 11.7 years) who underwent MRI between 1993 and 1996 served as controls. Follow-up MRI was performed on both patients and control subjects, and the cross-sectional areas of deep posterior muscles were measured digitally at levels C3-4, 4-5, and 5-6. Results The mean total cross-sectional area in the ACDF and control groups was 4,693.6 ± 1,140.9 and 4,825.8 ± 1,048.2 mm 2 in the first MR study (P = 0.63), and 4,616.7 ± 1,086.0 and 5,036.7 ± 1,105.6 mm 2 at followup (P = 0.13). The total cross-sectional area in the ACDF group slightly decreased, while that in the control group increased (-77.1 ± 889.7 vs. 210.9 ± 622.0 mm 2, P = 0.14). The mean change in the cross-sectional area had no significant correlation with clinical symptoms, including neck pain or JOA score. Conclusions ACDF patients did not show a marked decrease in the cross-sectional area of the deep posterior cervical muscles, but as compared with control subjects there was a slight decrease. A decrease in the cross-sectional area of these muscles after ACDF may not result in the axial symptoms as seen in patients treated by posterior surgery.

AB - Purpose To evaluate changes in the transverse area of deep posterior muscles of the cervical spine 10 years after anterior cervical decompression and fusion (ACDF), in comparison with healthy volunteers. Methods Thirty-one patients (22 males, 9 females, mean age at follow-up 59.3 years, mean follow-up 12.1 years) who had undergone preoperativeMRI and non-instrumented ACDF within levels C3-4 to C5-6 were enrolled. 32 asymptomatic volunteers (17 males, 15 females; mean age, 54.7 years; mean follow-up, 11.7 years) who underwent MRI between 1993 and 1996 served as controls. Follow-up MRI was performed on both patients and control subjects, and the cross-sectional areas of deep posterior muscles were measured digitally at levels C3-4, 4-5, and 5-6. Results The mean total cross-sectional area in the ACDF and control groups was 4,693.6 ± 1,140.9 and 4,825.8 ± 1,048.2 mm 2 in the first MR study (P = 0.63), and 4,616.7 ± 1,086.0 and 5,036.7 ± 1,105.6 mm 2 at followup (P = 0.13). The total cross-sectional area in the ACDF group slightly decreased, while that in the control group increased (-77.1 ± 889.7 vs. 210.9 ± 622.0 mm 2, P = 0.14). The mean change in the cross-sectional area had no significant correlation with clinical symptoms, including neck pain or JOA score. Conclusions ACDF patients did not show a marked decrease in the cross-sectional area of the deep posterior cervical muscles, but as compared with control subjects there was a slight decrease. A decrease in the cross-sectional area of these muscles after ACDF may not result in the axial symptoms as seen in patients treated by posterior surgery.

KW - Anterior decompression and fusion

KW - Cervical spine

KW - MRI

KW - Posterior extensor muscle

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