Evaluation of a Porous Bioabsorbable Interbody Mg-Zn Alloy Cage in a Goat Cervical Spine Model

Figure 4

CT fusion scores of the segments treated with two types of implants. (a) The fusion score of segments with a bone graft increased over time (P < 0.0001) and was significantly higher than the segments with a cage graft at 12 weeks and 24 weeks (p = 0.0158 and p = 0.001, respectively). No statistical difference was observed in the degree of fusion at 24 weeks in the segments with a cage, indicating unsuccessful bony fusion between the vertebral bodies. (b), (c) The fusion state of the segment with a bone graft is significantly superior to the segment with a cage graft at 24 weeks on sagittal reconstruction of the CT images.

(a)

(b)

(c)