caa a22 4500 445831650 CHVBK 20180317145317.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00586-011-1774-x doi (NATIONALLICENCE)springer-10.1007/s00586-011-1774-x Cross-sectional area of posterior extensor muscles of the cervical spine in asymptomatic subjects: a 10-year longitudinal magnetic resonance imaging study [Elektronische Daten] [Eijiro Okada, Morio Matsumoto, Daisuke Ichihara, Kazuhiro Chiba, Yoshiaki Toyama, Hirokazu Fujiwara, Suketaka Momoshima, Yuji Nishiwaki, Takeshi Takahata] There has been no prospective study on age-related changes of the extensor muscles of the cervical spine in healthy subjects. This study was conducted to elucidate any association between the changes in cross-sectional area of the extensor muscles of the cervical spine on MRIs and cervical disc degeneration or the development of clinical symptoms. Sixty-two subjects who underwent MR imaging by a 1.5-Tesla machine between 1993 and 1996 as asymptomatic volunteers in a previous study were recruited again 10years later for this follow-up study. The mean interval between the studies was 11.0±0.7years. The cross-sectional areas of the multifidus, semispinalis cervicis, semispinalis capitis, and splenius capitis at C3-C4, C4-C5, and C5-C6 intervertebral levels were measured on T2-weighted axial images using Image J 1.42. The mean cross-sectional areas of the deep extensor muscles were 1,396.8±337.6mm2 at the C3-C4 level, 1,514.7±381.0mm2 at the C4-C5 level, and 1,542.8±373.5mm2 at the C5-C6 level in the previous investigation. The cross-sectional areas were 1,498.7±374.4mm2 at the C3-C4 level, 1,569.9±390.9mm2 at the C4-C5 level, and 1,599.6±364.3mm2 at the 10-year follow-up. An increase in the cross-sectional area of the muscles was more frequently observed in subjects in their tens to thirties in the initial study, while a decrease was more frequently observed in those in their forties and older in the initial study. Disc degeneration was not correlated with a change in extensor muscle volume. Development of shoulder stiffness during follow-up was significantly negatively correlated with a change in the cross-sectional area of the deep extensor muscles. Springer-Verlag, 2011 Extensor muscle nationallicence Cervical spine nationallicence Longitudinal study nationallicence Magnetic resonance imaging (MRI) nationallicence Asymptomatic subjects nationallicence Okada Eijiro Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut Matsumoto Morio Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut Ichihara Daisuke Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut Chiba Kazuhiro Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut Toyama Yoshiaki Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut Fujiwara Hirokazu Department of Diagnostic Radiology, Keio University, Tokyo, Japan aut Momoshima Suketaka Department of Diagnostic Radiology, Keio University, Tokyo, Japan aut Nishiwaki Yuji Department of Preventive Medicine and Public Health, Keio University, Tokyo, Japan aut Takahata Takeshi Department of Orthopaedic Surgery, Isehara Kyodo Hospital, Kanagawa, Japan aut European Spine Journal Springer-Verlag 20/9(2011-09-01), 1567-1573 0940-6719 20:9<1567 2011 20 586 https://doi.org/10.1007/s00586-011-1774-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00586-011-1774-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Okada Eijiro Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut NATIONALLICENCE 700 1- Matsumoto Morio Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut NATIONALLICENCE 700 1- Ichihara Daisuke Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut NATIONALLICENCE 700 1- Chiba Kazuhiro Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut NATIONALLICENCE 700 1- Toyama Yoshiaki Department of Orthopaedic Surgery, Keio University, Shinanomachi 35, Shinjuku-ku, 160-8582, Tokyo, Japan aut NATIONALLICENCE 700 1- Fujiwara Hirokazu Department of Diagnostic Radiology, Keio University, Tokyo, Japan aut NATIONALLICENCE 700 1- Momoshima Suketaka Department of Diagnostic Radiology, Keio University, Tokyo, Japan aut NATIONALLICENCE 700 1- Nishiwaki Yuji Department of Preventive Medicine and Public Health, Keio University, Tokyo, Japan aut NATIONALLICENCE 700 1- Takahata Takeshi Department of Orthopaedic Surgery, Isehara Kyodo Hospital, Kanagawa, Japan aut NATIONALLICENCE 773 0- European Spine Journal Springer-Verlag 20/9(2011-09-01), 1567-1573 0940-6719 20:9<1567 2011 20 586 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer