Impact of cervical disc herniation combined with mild ossification on range of motion after cervical artificial disc replacement
HAN Xiao
TIAN Wei
LIU Bo
HE Da
LYU Yan-wei
WANG Hua-dong
Abstract：Objective To evaluate the impact of cervical disc herniation ( CDH) combined with mild ossification on the long term range of motion (ROM) after artificial disc replacement (ADR) in CDH patients, and to find out whether it is an indication for cervical ADR .Methods Fifty-four patients who got ADR with the diagnosis of CDH were included .According to the preoperative CT, patients were divided into two groups, CDH with mild ossification (group A, 42 cases) or simple CDH (group B, 12 cases).ROM was compared between two groups by X-ray at preoperation and last follow-up.At last fol-low-up, axial and sagittal CT was used to identify whether fusion was occurred at the ADR level and whether the mild ossifica -tion turned into typical ossification of posterior longitudinal ligament ( OPLL) .Results The patients of group A were older than those of group B (P<0.05).There were no statistical differences in gender ratio , duration of follow-up, the ROM be-fore operation and at last follow-up between the two groups (all P>0.05).In group A, 2 patients turned into typical OPLL at the 81-and 96-month follow-up.But the ROM at ADR level of those two patients were maintained which were 6.2°and 15.4°.There were 5 patients whose ROM at ADR level was less the 2°during the follow-up of group A, 4 of them were due to the incorrect indication and the other patient did not have OPLL because the fusion occurred at uncovertebral joint . Conclusion The CDH combined with mild ossification doesn′t affect the ROM at ADR level , so it is an indication for ADR .
Keywords：artificial disc replacementmild ossificationcervical disc herniationossification of posterior longitudi-nal ligamentindication
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 1-3 )