A Prospective Randomized Study of Clinical Outcomes in Patients With Cervical Compressive Myelopathy Treated With Open-Door or French-Door Laminoplasty

作者：Okada Motohiro^*; Minamide Akihito; Endo Toru; Yoshida Munehito; Kawakami Mamoru; Ando Muneharu; Hashizume Hiroshi; Nakagawa Yukihiro; Maio Kazuhiro

来源：Spine, 2009, 34(11): 1119-1126.

DOI：10.1097/BRS.0b013e31819c3b61

• prospective study
• cervical spine
• axial pain
• open-door laminoplasty
• French-door laminoplasty

Study Design. A prospective randomized clinical study.
Objective. To compare the clinical outcomes of open-door and French-door laminoplasties.
Summary of Background Data. Expansive laminoplasty for cervical compressive myelopathy is well established and a variety of modifications procedures have been developed. The procedures are mainly classified into open-door and French-door. It has never been prospectively investigated as to which surgical procedure, open-door or French-door laminoplasty, results in a more favorable outcome.
Methods. After informed consent was obtained from 40 patients, they were randomized into 2 surgical groups A and B. Patients in group A had open-door laminoplasty, and patients in group B underwent French-door laminoplasty with reattachment of the spinous process and extensor musculatures. The following criteria were evaluated: operation time, blood loss, perioperative complications, Japanese Orthopedic Association (JOA) scores, recovery rates, axial pain, and short-form 36 (SF-36). For radiographic evaluation, cervical lordosis was reviewed as lordotic angles, which were measured at C2-C7.
Results. Although the operation time was significantly less in group A as compared with group B, the mean blood loss in group A was significantly more than group B. Perioperative complications occurred more frequently in group A than in group B. Although there were no significant differences in postoperative JOA scores and recovery rates between the 2 groups, axial pain was significantly decreased in group B at final follow- up. The scores of every subscale of the SF-36 were higher in group B than group A.
Conclusion. Perioperative complications occurred more frequently in open-door laminoplasty than in French-door laminoplasty. JOA scores and recovery rates suggested that both open-door and French-door laminoplasties could be similarly effective in decompressing the spinal cord. Axial pain was improved in French-door laminoplasty but became worse in open-door laminoplasty. SF-36 suggested that French-door laminoplasty could be more beneficial than open-door laminoplasty for patients with cervical compressive myelopathy.

• 出版日期2009-5-15