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Surgical strategy for cervical myelopathy due to ossification of the posterior longitudinal ligament: Part 1: Clinical results and limitations of laminoplasty.
Spine (Phila Pa 1976). 2007 Mar 15; 32(6):647-53.S

Abstract

STUDY DESIGN

Retrospective study of 66 patients who underwent laminoplasty for treatment of cervical myelopathy due to ossification of the posterior longitudinal ligament (OPLL).

OBJECTIVES

The present study describes surgical results of laminoplasty for treatment of cervical myelopathy due to OPLL and aims to clarify 1) factors predicting outcome and 2) limitations of laminoplasty.

SUMMARY OF BACKGROUND DATA

During the period 1986 and 1996, laminoplasty was the only surgical treatment selected for cervical myelopathy at our institutions.

METHODS

We reviewed data obtained in 66 patients who underwent laminoplasty for treatment of cervical myelopathy due to OPLL. Mean duration of follow-up was 10.2 years (range, 5-20 years). Surgical outcomes were assessed using the Japanese Orthopaedic Association (JOA) scoring system for cervical myelopathy.

RESULTS

Surgical outcome was significantly poorer in patients with occupying ratio greater than 60%. Multiple regression analysis showed that the most significant predictor of poor outcome after laminoplasty was hill-shaped ossification, followed by lower preoperative JOA score, postoperative change in cervical alignment, and older age at surgery.

CONCLUSIONS

Laminoplasty is effective and safe for most patients with occupying ratio of OPLL less than 60% and plateau-shaped ossification. However, neurologic outcome of laminoplasty for cervical OPLL was poor or fair in patients with occupying ratio greater than 60% and/or hill-shaped ossification.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan. iwasaki@ort.med.osaka-u.ac.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Case Reports
Journal Article
Multicenter Study
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17413469

Citation

Iwasaki, Motoki, et al. "Surgical Strategy for Cervical Myelopathy Due to Ossification of the Posterior Longitudinal Ligament: Part 1: Clinical Results and Limitations of Laminoplasty." Spine, vol. 32, no. 6, 2007, pp. 647-53.
Iwasaki M, Okuda S, Miyauchi A, et al. Surgical strategy for cervical myelopathy due to ossification of the posterior longitudinal ligament: Part 1: Clinical results and limitations of laminoplasty. Spine (Phila Pa 1976). 2007;32(6):647-53.
Iwasaki, M., Okuda, S., Miyauchi, A., Sakaura, H., Mukai, Y., Yonenobu, K., & Yoshikawa, H. (2007). Surgical strategy for cervical myelopathy due to ossification of the posterior longitudinal ligament: Part 1: Clinical results and limitations of laminoplasty. Spine, 32(6), 647-53.
Iwasaki M, et al. Surgical Strategy for Cervical Myelopathy Due to Ossification of the Posterior Longitudinal Ligament: Part 1: Clinical Results and Limitations of Laminoplasty. Spine (Phila Pa 1976). 2007 Mar 15;32(6):647-53. PubMed PMID: 17413469.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Surgical strategy for cervical myelopathy due to ossification of the posterior longitudinal ligament: Part 1: Clinical results and limitations of laminoplasty. AU - Iwasaki,Motoki, AU - Okuda,Shin'ya, AU - Miyauchi,Akira, AU - Sakaura,Hironobu, AU - Mukai,Yoshihiro, AU - Yonenobu,Kazuo, AU - Yoshikawa,Hideki, PY - 2007/4/7/pubmed PY - 2007/4/27/medline PY - 2007/4/7/entrez SP - 647 EP - 53 JF - Spine JO - Spine (Phila Pa 1976) VL - 32 IS - 6 N2 - STUDY DESIGN: Retrospective study of 66 patients who underwent laminoplasty for treatment of cervical myelopathy due to ossification of the posterior longitudinal ligament (OPLL). OBJECTIVES: The present study describes surgical results of laminoplasty for treatment of cervical myelopathy due to OPLL and aims to clarify 1) factors predicting outcome and 2) limitations of laminoplasty. SUMMARY OF BACKGROUND DATA: During the period 1986 and 1996, laminoplasty was the only surgical treatment selected for cervical myelopathy at our institutions. METHODS: We reviewed data obtained in 66 patients who underwent laminoplasty for treatment of cervical myelopathy due to OPLL. Mean duration of follow-up was 10.2 years (range, 5-20 years). Surgical outcomes were assessed using the Japanese Orthopaedic Association (JOA) scoring system for cervical myelopathy. RESULTS: Surgical outcome was significantly poorer in patients with occupying ratio greater than 60%. Multiple regression analysis showed that the most significant predictor of poor outcome after laminoplasty was hill-shaped ossification, followed by lower preoperative JOA score, postoperative change in cervical alignment, and older age at surgery. CONCLUSIONS: Laminoplasty is effective and safe for most patients with occupying ratio of OPLL less than 60% and plateau-shaped ossification. However, neurologic outcome of laminoplasty for cervical OPLL was poor or fair in patients with occupying ratio greater than 60% and/or hill-shaped ossification. SN - 1528-1159 UR - https://www.unboundmedicine.com/medline/citation/17413469/Surgical_strategy_for_cervical_myelopathy_due_to_ossification_of_the_posterior_longitudinal_ligament:_Part_1:_Clinical_results_and_limitations_of_laminoplasty_ L2 - https://doi.org/10.1097/01.brs.0000257560.91147.86 DB - PRIME DP - Unbound Medicine ER -