Nakano K, Harata S, Suetsuna F, Araki T, Itoh J
Department of Orthopaedic Surgery, Hirosaki University Medical School, Japan.
Spine (Phila Pa 1976). 1992 Mar;17(3 Suppl):S41-3. doi: 10.1097/00007632-199203001-00009.
Between February 1986 and August 1989, 45 patients with cervical myelopathy were treated by spinous process-splitting laminoplasty. Hydroxyapatite intraspinous spacers were used to maintain the enlargement of the cervical spinal canal. The shape of this spacer is trapezoidal. After sagittal splitting of the spinous process, the spacer was inserted between the two halves and affixed with the wire. Histologic study showed there was good fusion between the spacer and bone. In all cases, good enlargement of the cervical spinal canal was achieved. Spacer displacement, wire breakage, and postoperative infection were not seen. There was no postoperative neurologic deterioration. Computed tomography showed that the width of the cervical spinal canal was maintained.
1986年2月至1989年8月期间，45例脊髓型颈椎病患者接受了棘突劈开成形术治疗。使用羟基磷灰石棘突间撑开器来维持颈椎管的扩大。该撑开器的形状为梯形。棘突矢状劈开后，将撑开器插入两半之间并用钢丝固定。组织学研究显示撑开器与骨之间融合良好。所有病例均实现了颈椎管的良好扩大。未见撑开器移位、钢丝断裂及术后感染。术后无神经功能恶化。计算机断层扫描显示颈椎管宽度得以维持。
