[Biomechanical evaluation of titanium mesh with anterior plate fixation or ilium autograft in anterior cervical decompression].
OBJECTIVE
To evaluate the biomechanical characteristics of titanium mesh with anterior plate fixation or ilium autograft in anterior cervical decompression.


METHODS
Six fresh cervical spine specimens (C3-7) of young cadaver were used in the biomechanical test. After C5, C5,6 and C4-6 were given vertebrectomy, ilium autograft and titanium mesh with anterior plate fixation were performed. Their stabilities of flexion, bilateral axial rotation, the lateral bending and the extension were tested. Intact cervical spine specimens served as control group.


RESULTS
Ilium autograft improved the stability of the unstable cervical vertebrae and decreased the flexion, the lateral bending or the extension, showing a significant difference when compared with control group (P<0.05). Whereas, axial rotational motion was decreased insignificantly (P>0.05). Titanium mesh with anterior plate fixation improved the stability of the unstable spine and decreased the flexion,the bilateral axial rotation,the lateral bending or the extension, showing a significant difference when compared with control group (P<0.05).


CONCLUSIONS
The vertebrectomy and anterior cervical fusion by ilium autograft was the least stable construct of all modes tested,and the titanium mesh implantation is stable than the intact cervical sample.
Zhao
Zhuchuan
Z
Department of Orthopaedics,the People's Hospital of Cuizhou Province,Guiyang Guizhou, 550002, P. R. China. lilima46@yahoo.com.cn
Cao
Yongfei
Y
Peng
Zhi
Z
D001696:Biomechanical Phenomena; D001860:Bone Plates; D016025:Bone Transplantation; D002574:Cervical Vertebrae / Q000601:surgery; D005593:Fracture Fixation, Internal; D006801:Humans; D007085:Ilium / Q000637:transplantation; D016268:Internal Fixators; D016059:Range of Motion, Articular; D013123:Spinal Fusion; D014025:Titanium; D014182:Transplantation, Autologous
D014025:Titanium