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Radiological features of cervical spine in dropped head syndrome: a matched case-control study.
Kudo, Yoshifumi; Toyone, Tomoaki; Okano, Ichiro; Ishikawa, Koji; Tani, Soji; Matsuoka, Akira; Maruyama, Hiroshi; Yamamura, Ryo; Hayakawa, Chikara; Tsuchiya, Koki; Emori, Haruka; Shirahata, Toshiyuki; Hoshino, Yushi; Ozawa, Tomoyuki; Yasukawa, Taiki; Inagaki, Katsunori.
Affiliation
  • Kudo Y; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan. Kudo_4423@med.showa-u.ac.jp.
  • Toyone T; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Okano I; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Ishikawa K; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Tani S; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Matsuoka A; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Maruyama H; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Yamamura R; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Hayakawa C; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Tsuchiya K; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Emori H; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Shirahata T; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Hoshino Y; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Ozawa T; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Yasukawa T; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
  • Inagaki K; Department of Orthopedic Surgery, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
Eur Spine J ; 30(12): 3600-3606, 2021 12.
Article in En | MEDLINE | ID: mdl-34302525
ABSTRACT

PURPOSE:

Dropped head syndrome (DHS) is presumably caused by focal myopathy in the cervical posterior muscles; however, distinguishable radiological features of the cervical spine in DHS remain unidentified. This study investigated the radiological features of the cervical spine in dropped head syndrome.

METHODS:

The records of DHS patients and age- and sex-matched cervical spondylotic myelopathy (CSM) patients were reviewed. Cervical spinal parameters (C2-7, C2-4, and C5-7 angles) were assessed on lateral cervical spine radiographs. Quantitative radiographic evaluation of cervical spine degeneration was performed using the cervical degenerative index (CDI), which consists of four elements disk space narrowing (DSN), endplate sclerosis, osteophyte formation, and listhesis.

RESULTS:

Forty-one DHS patients were included. Statistically significant differences were noted between the upper and lower cervical spine in the sagittal angle parameters on the neutral, flexion, and extension radiographs in DHS group, whereas no significant differences were observed in CSM group. CDI comparison showed significantly higher scores of DSN in C3/4, C4/5, C5/6, and C6/7; sclerosis in C5/6 and C6/7; and osteophyte formation in C4/5, C5/6, and C6/7 in DHS group than in CSM group. Comparison of listhesis scores revealed significant differences in the upper levels of the cervical spine (C2/3, C3/4, and C4/5) between two groups.

CONCLUSION:

Our results demonstrated that the characteristic radiological features in the cervical spine of DHS include lower-level dominant severe degenerative change and upper-level dominant spondylolisthesis. These findings suggest that degenerative changes in the cervical spine may also play a role in the onset and progression of DHS.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Cervical Vertebrae / Muscular Diseases Type of study: Diagnostic_studies / Observational_studies Limits: Humans Language: En Journal: Eur Spine J Journal subject: ORTOPEDIA Year: 2021 Document type: Article Affiliation country:
Fulltext
Add to My VHL
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Cervical Vertebrae / Muscular Diseases Type of study: Diagnostic_studies / Observational_studies Limits: Humans Language: En Journal: Eur Spine J Journal subject: ORTOPEDIA Year: 2021 Document type: Article Affiliation country: