Neurological Complications of Cervical Laminoplasty for Patients With Ossification of the Posterior Longitudinal Ligament—A multi-Institutional Retrospective Study

• DOI: 10.1097/brs.0b013e3181fda7fa
• Publication Date: 2011-02-02T07:30:37Z
• Authors: Atsushi Seichi; Yuichi Hoshino; Atsushi Kimura; Shinnosuke Nakahara; Masahiko Watanabe; Tsuyoshi Kato; Atsushi Ono; Yoshihisa Kotani; Mamoru Mitsukawa; Kosei Ijiri; Norio Kawahara; Satoshi Inami; Hirotaka Chikuda; Katsushi Takeshita; Yukihiro Nakagawa; Toshihiko Taguchi; Masashi Yamazaki; Kenji Endo; Hironobu Sakaura; Kenzo Uchida; Yoshiharu Kawaguchi; Masashi Neo; Masahito Takahashi; Katsumi Harimaya; Hideo Hosoe; Shiro Imagama; Shinichiro Taniguchi; Takui Ito; Takashi Kaito; Kazuhiro Chiba; Morio Matsumoto; Yoshiaki Toyama
• Keywords: Laminoplasty; Posterior longitudinal ligament

Retrospective multi-institutional study.To investigate the incidence of neurological deficits after cervical laminoplasty for ossification posterior longitudinal ligament (OPLL).According to analysis long-term results, OPLL has been reported as a safe and effective alternative procedure with few complications. However, perioperative complication rates have not well described.Subjects comprised 581 patients (458 men 123 women; mean age: 62 ± 10 years; range: 30-86 years) who had undergone at 27 institutions between 2005 2008. Continuous-type was seen in 114, segmental-type 146, mixed-type 265, local-type 24, judged 32 patients. Postoperative complications within 2 weeks were analyzed detail. Cobb angle C2 C7 (C2/C7 angle), maximal thickness, occupying rate investigated. Pre- postoperative magnetic resonance imaging performed on complications.Open-door conducted 237, double-door 311, other types 33 Deterioration lower-extremity function occurred 18 (3.1%). Causes deterioration epidural hematoma 3, spinal cord herniation through injured dura mater 1, incomplete due vertebral artery injury while making trough unidentified 13 Prevalence unsatisfactory recovery reaching preoperative level by 6-month follow-up 7/581 (1.2%). Mean deteriorated 51.2 13.6% (range, 21.0%-73.3%), significantly higher than 42.3 13.0% without deterioration. thickness also (mean, 6.6 2.2 mm) those 5.7 2.0 mm). No significant difference C2/C7 lordotic groups.Although most can be expected recover some extent, frequency short-term authors expected.