Long-term Results of Expansive Open-Door Laminoplasty for Cervical Myelopathy−Average 14-Year Follow-up Study

• DOI: 10.1097/01.brs.0000250307.78987.6b
• Publication Date: 2006-12-13T10:33:58Z
• Authors: Kazuhiro Chiba; Yuto Ogawa; Ken Ishii; Hironari Takaishi; Masaya Nakamura; Hirofumi Maruiwa; Morio Matsumoto; Yoshiaki Toyama
• Keywords: Laminoplasty; Cervical spondylosis; Expansive; Kyphosis

Retrospective case series on long-term follow-up results of original expansive open-door laminoplasty for cervical myelopathy due to spondylosis (CSM) and ossification posterior longitudinal ligament (OPLL).To elucidate efficacy problems improve future surgical outcomes.Little information is available outcomes without grafts, implants, or instruments.The study group included 80 patients who underwent were followed minimum 10 years. Clinical results, including Japanese Orthopedic Association scores, recovery rates, occurrences complications, deterioration investigated. Cervical alignments, type OPLL, range motion, anteroposterior diameter spinal canal, progression OPLL assessed plain radiographs. Spinal cord decompression was verified magnetic resonance imaging.Average score rate improved significantly until 3 years after surgery remained at an acceptable level in both with slight 5 Segmental motor palsy developed 8 patients. Late deterioration, mainly lower extremity decline, CSM 16 Overall motion decreased by 36%. Patients lordosis gradually patient groups. Such changes alignments did not affect patients, while preoperative kyphosis had rates than those straight lordotic alignments. that detected 66% clinical results. Although infrequent, imaging revealed atrophy cord, compression adjacent segments degenerative progression.Long-term bone graft, graft substitutes, instruments satisfactory. However, segmental paralysis, kyphosis, established before surgery, progression, late age-related degeneration remain challenging problems.