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Comparison between Plate and Cage Construct With Hydroxyapatite and Autogenous Bone in Anterior Cervical Fusion

Seong-Yup Jeong MD,, Jong-Kil Kim MD,, Ji-Hoon Kang MD,, Kyung-Tae Kim MD, Kyung-Jin Song MD, Kwang-Bok Lee MD

Abstract


Aim. To compare the results of anterior cervical fusion using plate and cage filled with hydroxyapatite and filled with autogenous bone.

Materials and methods. One hundred sixty one patients underwent anterior cervical fusion with cage and plate. Subjects were divided into two groups. Group A (n=78) underwent anterior cervical fusion using plate and cage filled with hydroxyapatite, and Group B (n=83) underwent anterior cervical fusion using plate and cage filled with autogenous bone.  Radiographic evaluations (fusion rate, cage subsidence), clinical outcomes (VAS, NDI, SF-36), and complications between the two groups were compared.

Results. The fusion time of Group A (8.0 ± 2.6 months) was significantly late compared to that of Group B (4.2 ± 2.4 months). There is no significant difference between two groups in radiologic parameters (fusion rate, subsidence rate) complications (dysphagia, hoarseness, screw back-out, and pseudarthrosis) and clinical outcomes (VAS, NDI, SF-36).

Conclusions. The fusion time of anterior cervical fusion using plate and cage filled with hydroxyapatite is longer compared to that using plate and cage filled with autogenous bone, yet these two methods do not show significant differences in clinical and radiographic results. Therefore, it can be a substitute for the anterior cervical fusion using autogenous bone graft. 


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