TY - JOUR
T1 - Prevalence and distribution of ossification of the supra/interspinous ligaments in symptomatic patients with cervical ossification of the posterior longitudinal ligament of the spine
T2 - a CT-based multicenter cross-sectional study
AU - Mori, Kanji
AU - Yoshii, Toshitaka
AU - Hirai, Takashi
AU - Iwanami, Akio
AU - Takeuchi, Kazuhiro
AU - Yamada, Tsuyoshi
AU - Seki, Shoji
AU - Tsuji, Takashi
AU - Fujiyoshi, Kanehiro
AU - Furukawa, Mitsuru
AU - Nishimura, Soraya
AU - Wada, Kanichiro
AU - Koda, Masao
AU - Furuya, Takeo
AU - Matsuyama, Yukihiro
AU - Hasegawa, Tomohiko
AU - Takeshita, Katsushi
AU - Kimura, Atsushi
AU - Abematsu, Masahiko
AU - Haro, Hirotaka
AU - Ohba, Tetsuro
AU - Watanabe, Masahiko
AU - Katoh, Hiroyuki
AU - Watanabe, Kei
AU - Ozawa, Hiroshi
AU - Kanno, Haruo
AU - Imagama, Shiro
AU - Ito, Zenya
AU - Fujibayashi, Shunsuke
AU - Yamazaki, Masashi
AU - Matsumoto, Morio
AU - Nakamura, Masaya
AU - Okawa, Atsushi
AU - Kawaguchi, Yoshiharu
N1 - Publisher Copyright:
© 2016 The Author(s).
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Background: Supra/interspinous ligaments connect adjacent spinous processes and act as a stabilizer of the spine. As with other spinal ligaments, it can become ossified. However, few report have discussed ossification supra/interspinous ligaments (OSIL), so its epidemiology remains unknown. We therefore aimed to investigate the prevalence and distribution of OSIL in symptomatic patients with cervical ossification of the posterior longitudinal ligament (OPLL). Methods: The participants of our study were symptomatic patients with cervical OPLL who were diagnosed by standard radiographs of the cervical spine. The whole spine CT data as well as clinical parameters such as age and sex were obtained from 20 institutions belong to the Japanese Multicenter Research Organization for Ossification of the Spinal Ligament (JOSL). The prevalence and distribution of OSIL and the association between OSIL and clinical parameters were reviewed. The sum of the levels involved by OPLL (OP-index) and OSIL (OSI-index) as well as the prevalence of ossification of the nuchal ligament (ONL) were also investigated. Results: A total of 234 patients with a mean age of 65 years was recruited. The CT-based evidence of OSIL was noted in 68 (54 males and 14 females) patients (29%). The distribution of OSIL showed a significant thoracic preponderance. In OSIL-positive patients, single-level involvement was noted in 19 cases (28%), whereas 49 cases (72%) presented multi-level involvement. We found a significant positive correlation between the OP-index grade and OSI-index. ONL was noted at a significantly higher rate in OSIL-positive patients compared to negative patients. Conclusions: The prevalence of OSIL in symptomatic patients with cervical OPLL was 29%. The distribution of OSIL showed a significant thoracic preponderance.
AB - Background: Supra/interspinous ligaments connect adjacent spinous processes and act as a stabilizer of the spine. As with other spinal ligaments, it can become ossified. However, few report have discussed ossification supra/interspinous ligaments (OSIL), so its epidemiology remains unknown. We therefore aimed to investigate the prevalence and distribution of OSIL in symptomatic patients with cervical ossification of the posterior longitudinal ligament (OPLL). Methods: The participants of our study were symptomatic patients with cervical OPLL who were diagnosed by standard radiographs of the cervical spine. The whole spine CT data as well as clinical parameters such as age and sex were obtained from 20 institutions belong to the Japanese Multicenter Research Organization for Ossification of the Spinal Ligament (JOSL). The prevalence and distribution of OSIL and the association between OSIL and clinical parameters were reviewed. The sum of the levels involved by OPLL (OP-index) and OSIL (OSI-index) as well as the prevalence of ossification of the nuchal ligament (ONL) were also investigated. Results: A total of 234 patients with a mean age of 65 years was recruited. The CT-based evidence of OSIL was noted in 68 (54 males and 14 females) patients (29%). The distribution of OSIL showed a significant thoracic preponderance. In OSIL-positive patients, single-level involvement was noted in 19 cases (28%), whereas 49 cases (72%) presented multi-level involvement. We found a significant positive correlation between the OP-index grade and OSI-index. ONL was noted at a significantly higher rate in OSIL-positive patients compared to negative patients. Conclusions: The prevalence of OSIL in symptomatic patients with cervical OPLL was 29%. The distribution of OSIL showed a significant thoracic preponderance.
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U2 - 10.1186/s12891-016-1350-y
DO - 10.1186/s12891-016-1350-y
M3 - Article
C2 - 27903251
AN - SCOPUS:85000416492
VL - 17
SP - 1
EP - 7
JO - BMC Musculoskeletal Disorders
JF - BMC Musculoskeletal Disorders
SN - 1471-2474
IS - 1
M1 - 492
ER -