Clinical results of Laminoplasty versus posterior decompression with segmental fusion for the Dynamic K-line (+/-/+) type OPLL: a propensity score matching analysis

The aim of this study was to investigate efficacy of posterior decompression with segmental fusion at a maximum cord compression level (sPDF) for the K-line (+/-/+) OPLL cases. This study enrolled 29 patients with K-line (+/-/+) OPLL who underwent laminoplasty (LMP) or sPDF. These patients were incl...

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Published inJournal of Spine Research Vol. 11; no. 10; pp. 1163 - 1168
Main Authors Fujiyoshi, Takayuki, Kitamura, Mitsuhiro, Otagiri, Takuma, Hasue, Fumio, Kamiya, Koshiro, Maki, Satoshi, Furuya, Takeo, Otori, Seiji, Koda, Masao, Yamazaki, Masashi, Konishi, Hiroaki
Format Journal Article
LanguageJapanese
Published The Japanese Society for Spine Surgery and Related Research 20.10.2020
Subjects
cervical ossification of the posterior longitudinal ligament
Dynamic
K-line
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Abstract The aim of this study was to investigate efficacy of posterior decompression with segmental fusion at a maximum cord compression level (sPDF) for the K-line (+/-/+) OPLL cases. This study enrolled 29 patients with K-line (+/-/+) OPLL who underwent laminoplasty (LMP) or sPDF. These patients were included in propensity score calculation and 1-to-1 matching resulted in 7 pairs of LMP and sPDF cases. The JOA recovery rate and the acquired score were significantly higher in sPDF group. For the K-line (+/-/+) OPLL case, sPDF seems to be a useful operative method.
AbstractList The aim of this study was to investigate efficacy of posterior decompression with segmental fusion at a maximum cord compression level (sPDF) for the K-line (+/-/+) OPLL cases. This study enrolled 29 patients with K-line (+/-/+) OPLL who underwent laminoplasty (LMP) or sPDF. These patients were included in propensity score calculation and 1-to-1 matching resulted in 7 pairs of LMP and sPDF cases. The JOA recovery rate and the acquired score were significantly higher in sPDF group. For the K-line (+/-/+) OPLL case, sPDF seems to be a useful operative method.
Author Kamiya, Koshiro
Fujiyoshi, Takayuki
Koda, Masao
Otagiri, Takuma
Konishi, Hiroaki
Furuya, Takeo
Maki, Satoshi
Kitamura, Mitsuhiro
Yamazaki, Masashi
Hasue, Fumio
Otori, Seiji
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  organization: Department of orthopaedic surgery, Kimitsu Chuo Hospital
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  fullname: Kitamura, Mitsuhiro
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  fullname: Otagiri, Takuma
  organization: Department of orthopaedic surgery, Kimitsu Chuo Hospital
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  fullname: Hasue, Fumio
  organization: Department of orthopaedic surgery, Kimitsu Chuo Hospital
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  fullname: Kamiya, Koshiro
  organization: Department of orthopaedic surgery, Kimitsu Chuo Hospital
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  fullname: Maki, Satoshi
  organization: Department of orthopaedic surgery, Graduate school of medicine, Chiba University
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  fullname: Furuya, Takeo
  organization: Department of orthopaedic surgery, Graduate school of medicine, Chiba University
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  fullname: Otori, Seiji
  organization: Department of orthopaedic surgery, Graduate school of medicine, Chiba University
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  fullname: Koda, Masao
  organization: Department of orthopaedic surgery, University of Tsukuba
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  fullname: Yamazaki, Masashi
  organization: Department of orthopaedic surgery, University of Tsukuba
– sequence: 11
  fullname: Konishi, Hiroaki
  organization: Department of orthopaedic surgery, Nagasaki Rosai Hospital
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4) 新籾正明, 石川哲大, 牧 聡: 中下位頚椎後方手術における新しい内固定法-椎孔周囲スクリュー固定の経験. J Spine Res. 2014; 5: 549
1) Fujiyoshi T, Yamazaki M, Konishi H, et al: A new concept for making decisions regarding the surgical approach for cervical ossification of the posterior longitudinal ligament: the K-line. Spine. 2008; 33: E990-993
2) Fujiyoshi T, Yamazaki M, Okawa A, et al: Static versus dynamic factors for development of myelopathy in patients with cervical ossification of the posterior longitudinal ligament. J Clin Neurosci. 2010; 17: 320-324
5) Rosenbaum PR, Rubin DB: The central role of the propensity score in observational studies for causal effects. Biometrika. 1983; 70: 41-55
6) Kanbara S, Imagama S, Kato F, et al: A retrospective imaging study of surgical outcomes and range of motion in patients with cervical ossification of the posterior longitudinal ligament. Eur Spine J. 2018; 27: 1416-1422
3) 藤由崇之, 蓮江文男, 小西宏昭, 他: 動的因子を加味したK-lineによる頚椎後縦靭帯骨化症の術式選択-Dynamic K-lineの有用性-. J. Spine Res. 2017; 8: 1626-1630
9) Maki S, Aramomi M, Koda M, et al: Paravertebral foramen screw fixation for posterior cervical spine fusion: biomechanical study and description of a novel technique. J Neurosurg Spine. 2017; 27: 415-420
7) Takeuchi K, Yokoyama T, Wada K, et al: K-line (−) in the neck-flexed position in patients with ossification of the posterior longitudinal ligament is a risk factor or poor clinical outcome after cervical laminoplasty. Spine. 2016; 41: 1891-1895
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Title Clinical results of Laminoplasty versus posterior decompression with segmental fusion for the Dynamic K-line (+/-/+) type OPLL: a propensity score matching analysis
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