Characteristics affecting cervical sagittal alignment in patients with chronic low back pain |
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Authors: | Hideyuki Arima Yu Yamato Kimihito Sato Yoshihiro Uchida Toshiyuki Tsuruta Kanehisa Hashiguchi Hajime Hamamoto Eiichiro Watanabe Kaoru Yamanaka Tomohiko Hasegawa Go Yoshida Tatsuya Yasuda Tomohiro Banno Shin Oe Hiroki Ushirozako Tomohiro Yamada Koichiro Ide Yuh Watanabe Yukihiro Matsuyama |
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Affiliation: | 1. Department of Orthopaedic Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu city, Shizuoka 431-3192, Japan;2. Sato Orthopedic Clinic, 5-4-1-16 Nakakasai, Edogawa-ku, Tokyo, 134-0084, Japan;3. Seisen Clinic, 191-1 Kakita, Shimizu-cho, Sunto-gun, Shizuoka, 411-0904, Japan;4. Tsuruta Orthopedic Clinic, 1241-6 Ushizuchoukatsu, Ogi city, Saga, 840-0306, Japan;5. Hashiguchi Orthopedic Clinic, 1-41-3 Komatsubara, Kagoshima city, Kagoshima, 891-0114, Japan;6. Hamamoto Orthopedic Clinic, 40-5 Johoku, Aoi-ku, Shizuoka city, Shizuoka, 420-0805, Japan;7. Fuji Orthopedic Hospital, 1-4-23 K|Nishiki-cho, Fuji city, Shizuoka, 417-0045, Japan;8. Yamanaka Orthopedic Clinic, 1-28-6 Shikiji, Suruga-ku, Shizuoka city, Shizuoka, 422-8036, Japan;1. Shoulder and Elbow Service, CHRU Strasbourg, Avenue Molière, 67098, Strasbourg Cedex, France;2. Institut of Anatomy, Faculté de Médecine, 4, Rue Kirschleger, 67085, Strasbourg Cedex, France;3. ICube-GEBOAS, CNRS, UMR 7357, Faculté de Médecine, 4, Rue Kirschleger, 67085, Strasbourg Cedex, France;4. Hôpitaux Universitaires de Strasbourg, Centre de Chirurgie Pédiatrique, Strasbourg, France;1. Department of Rehabilitation Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan;2. Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan;3. Department of Health Services Research, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan;4. Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan;5. Department of Health Policy and Informatics, Tokyo Medical and Dental University Graduate school of Medicine, Tokyo, Japan;1. Department of Orthopaedic Surgery, Nihon University Itabashi Hospital, 30-1 Oyaguchikamimati, Itabashi-ku, Tokyo, 173-8610, Japan;2. Department of Orthopaedic Surgery, Sonoda Medical Institute Tokyo Spine Center, 2-5-10 Ikohoncyo Adati-ku, Tokyo, 121-0807, Japan |
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Abstract: | BackgroundSagittal spino-pelvic malalignment in patients with chronic low back pain (CLBP) have been reported in the past, which may also affect cervical spine lesions. The purpose of this study is to investigate the cervical alignment in patients with CLBP.MethodOf the patients who visited an orthopedic specialist due to low back pain lasting more than three months, 121 cases (average 71.5-years-old, 46 male and 75 female) with whole standing spinal screening radiographs were reviewed (CLBP group). Cervical parameters included cervical lordosis (CL), C2–C7 sagittal vertical axis (C2-7 SVA), and the T1 slope minus CL (T1S-CL). Cervical spine deformity was defined as C2-7 SVA >4 cm, CL <0°, or T1S-CL ≧20°. We compared the cervical alignment of these patients with 121 age and gender matched volunteers (control group).ResultsThe prevalence of cervical spine deformity was significantly higher in the CLBP group than in the control group (20.7% vs. 10.7%, P = 0.034). The mean CL was smaller in the CLBP group than in the control group (16.1° vs. 21.4°, P = 0.002). The mean C2-7 SVA was 17.6 mm vs. 18.7 mm in the CLBP group and in the control group, respectively (P = 0.817). The mean T1S-CL was larger in the CLBP group than in the control group (9.1° vs. 3.5°, P < 0.001). Multivariate analysis showed that people with CLBP were more likely to have cervical deformities than people without CLBP (odds ratio 2.16, 95% confidence interval 1.006 to 4.637).ConclusionsThis study results suggest that people with CLBP present with worse cervical sagittal alignment and higher prevalence of cervical spine deformities than age and gender matched volunteers with no CLBP. This means CLBP impacts cervical spine lesions negatively.Level of evidenceⅣ |
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