A Clinical and Radiographic Comparison between Cervical Degenerative Stenosis and Ossification of the Posterior Longitudinal Ligament after Single, Open-Door Instrumented Laminoplasty

Fengbin Yu, Fei Huang, Hui Zhu, Degang Tao, Jianbo Jin and Lian Cen

Department of Orthopaedic Surgery, East China University of Science and Technology, China
Department of Product Engineering, East China University of Science and Technology, China

^*Correspondance to: Lian Cen 

 PDF  Full Text DOI: 10.25107/2474-1647.2227

Abstract

There are few large series evaluating the operative results of laminoplasty for the treatment of multilevel Cervical Degenerative Stenosis (CDS) and Ossification of the Posterior Longitudinal Ligament (OPLL). The purpose of this study was to compare the clinical and radiographic differences between patients with CDS and those with OPLL after posterior, single open-door instrumented laminoplasty. From 2012 and 2016, 88 patients with either multilevel CDS (n=55) or segmental OPLL (n=33) were treated with posterior, single open-door instrumented laminoplasty. When compared to the CDS patients, the OPLL patients had more Estimated Blood Loss (EBL) (360 + 66 ml vs 220 + 48 ml) and longer operative time (145 + 12 min vs 115 + 13 min) than those with CDS (p<0.001). The extent of the loss of sagittal cervical range of motion after laminoplasty was greater in the OPLL group (19 + 5 degrees vs 10 + 3 degrees; p<0.001). Both groups had marked improvement in the Japanese Orthopedic Association (JOA) score after surgery (p<0.001). There were no significant differences in the pre- and postoperative JOA scores or recovery ratio between the two groups (p>0.05). The rate of complications also did not differ between the two groups (p>0.05). Our study showed that the EBL, operative time, and loss of cervical range of motion were greater in the OPLL group. We speculated that tissues properties associated with OPLL might be responsible for the differences between the two groups.

Keywords

Ossification; Posterior longitudinal ligament; Cervical degenerative stenosis; Laminoplasty

Cite the article

Yu F, Huang F, Zhu H, Tao D, Jin J, Cen L. A Clinical and Radiographic Comparison between Cervical Degenerative Stenosis and Ossification of the Posterior Longitudinal Ligament after Single, Open-Door Instrumented Laminoplasty. Clin Surg. 2018; 3: 2227.