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Comparison of clinical outcomes between laminoplasty, posterior decompression with instrumented fusion, and anterior decompression with fusion for K-line (-) cervical ossification of the posterior longitudinal ligament.
Eur Spine J. 2016 07; 25(7):2294-301.ES

Abstract

PURPOSE

The K-line, which is a virtual line that connects the midpoints of the anteroposterior diameter of the spinal canal at C2 and C7 in a plain lateral radiogram, is a useful preoperative predictive indicator for sufficient decompression by laminoplasty (LMP) for ossification of the posterior longitudinal ligament (OPLL). K-line is defined as (+) when the peak of OPLL does not exceed the K-line, and is defined as (-) when the peak of OPLL exceeds the K-line. For patients with K-line (-) OPLL, LMP often results in poor outcome. The aim of the present study was to compare the clinical outcome of LMP, posterior decompression with instrumented fusion (PDF) and anterior decompression and fusion (ADF) for patients with K-line (-) OPLL.

METHODS

The present study included patients who underwent surgical treatment including LMP, PDF and ADF for K-line (-) cervical OPLL. We retrospectively compared the clinical outcome of those patients in terms of Japanese Orthopedic Association score (JOA score) recovery rate.

RESULTS

JOA score recovery rate was significantly higher in the ADF group compared with that in the LMP group and the PDF group. The JOA score recovery rate in the PDF group was significantly higher than that in the LMP group.

CONCLUSIONS

LMP should not be used for K-line (-) cervical OPLL. ADF is one of the suitable surgical treatments for K-line (-) OPLL. Both ADF and PDF are applicable for K-line (-) OPLL according to indications set by each institute and surgical decisions.

Authors+Show Affiliations

Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 2608670, Japan. masaokod@gmail.com.Department of Orthopedic Surgery, Numazu City Hospital, Numazu, Japan.Department of Orthopedic Surgery, Nagasaki Rosai Hospital, Nagasaki, Japan.Department of Orthopedic Surgery, Numazu City Hospital, Numazu, Japan.Department of Orthopedic Surgery, Numazu City Hospital, Numazu, Japan.Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 2608670, Japan.Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 2608670, Japan.Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 2608670, Japan.Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 2608670, Japan.Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 2608670, Japan.Department of Orthopedic Surgery, University of Tsukuba, Tsukuba, Japan.Department of Orthopedic Surgery, Chiba Aoba Municipal Hospital, Chiba, Japan.Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 2608670, Japan.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

27072553

Citation

Koda, Masao, et al. "Comparison of Clinical Outcomes Between Laminoplasty, Posterior Decompression With Instrumented Fusion, and Anterior Decompression With Fusion for K-line (-) Cervical Ossification of the Posterior Longitudinal Ligament." European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, vol. 25, no. 7, 2016, pp. 2294-301.
Koda M, Mochizuki M, Konishi H, et al. Comparison of clinical outcomes between laminoplasty, posterior decompression with instrumented fusion, and anterior decompression with fusion for K-line (-) cervical ossification of the posterior longitudinal ligament. Eur Spine J. 2016;25(7):2294-301.
Koda, M., Mochizuki, M., Konishi, H., Aiba, A., Kadota, R., Inada, T., Kamiya, K., Ota, M., Maki, S., Takahashi, K., Yamazaki, M., Mannoji, C., & Furuya, T. (2016). Comparison of clinical outcomes between laminoplasty, posterior decompression with instrumented fusion, and anterior decompression with fusion for K-line (-) cervical ossification of the posterior longitudinal ligament. European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 25(7), 2294-301. https://doi.org/10.1007/s00586-016-4555-8
Koda M, et al. Comparison of Clinical Outcomes Between Laminoplasty, Posterior Decompression With Instrumented Fusion, and Anterior Decompression With Fusion for K-line (-) Cervical Ossification of the Posterior Longitudinal Ligament. Eur Spine J. 2016;25(7):2294-301. PubMed PMID: 27072553.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of clinical outcomes between laminoplasty, posterior decompression with instrumented fusion, and anterior decompression with fusion for K-line (-) cervical ossification of the posterior longitudinal ligament. AU - Koda,Masao, AU - Mochizuki,Makondo, AU - Konishi,Hiroaki, AU - Aiba,Atsuomi, AU - Kadota,Ryo, AU - Inada,Taigo, AU - Kamiya,Koshiro, AU - Ota,Mitsutoshi, AU - Maki,Satoshi, AU - Takahashi,Kazuhisa, AU - Yamazaki,Masashi, AU - Mannoji,Chikato, AU - Furuya,Takeo, Y1 - 2016/04/13/ PY - 2015/04/22/received PY - 2016/03/27/accepted PY - 2016/03/27/revised PY - 2016/4/14/entrez PY - 2016/4/14/pubmed PY - 2017/11/29/medline KW - Anterior decompression KW - Anterior fusion KW - Cervical spine KW - Kyphosis KW - Laminoplasty KW - Myelopathy KW - OPLL KW - Posterior decompression KW - Posterior fusion KW - Surgical outcome SP - 2294 EP - 301 JF - European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society JO - Eur Spine J VL - 25 IS - 7 N2 - PURPOSE: The K-line, which is a virtual line that connects the midpoints of the anteroposterior diameter of the spinal canal at C2 and C7 in a plain lateral radiogram, is a useful preoperative predictive indicator for sufficient decompression by laminoplasty (LMP) for ossification of the posterior longitudinal ligament (OPLL). K-line is defined as (+) when the peak of OPLL does not exceed the K-line, and is defined as (-) when the peak of OPLL exceeds the K-line. For patients with K-line (-) OPLL, LMP often results in poor outcome. The aim of the present study was to compare the clinical outcome of LMP, posterior decompression with instrumented fusion (PDF) and anterior decompression and fusion (ADF) for patients with K-line (-) OPLL. METHODS: The present study included patients who underwent surgical treatment including LMP, PDF and ADF for K-line (-) cervical OPLL. We retrospectively compared the clinical outcome of those patients in terms of Japanese Orthopedic Association score (JOA score) recovery rate. RESULTS: JOA score recovery rate was significantly higher in the ADF group compared with that in the LMP group and the PDF group. The JOA score recovery rate in the PDF group was significantly higher than that in the LMP group. CONCLUSIONS: LMP should not be used for K-line (-) cervical OPLL. ADF is one of the suitable surgical treatments for K-line (-) OPLL. Both ADF and PDF are applicable for K-line (-) OPLL according to indications set by each institute and surgical decisions. SN - 1432-0932 UR - https://www.unboundmedicine.com/medline/citation/27072553/Comparison_of_clinical_outcomes_between_laminoplasty_posterior_decompression_with_instrumented_fusion_and_anterior_decompression_with_fusion_for_K_line_____cervical_ossification_of_the_posterior_longitudinal_ligament_ L2 - https://doi.org/10.1007/s00586-016-4555-8 DB - PRIME DP - Unbound Medicine ER -