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

Figure 1

The construction of the goat cervical spine model. (a) The front and the lateral view of the MAO/Si-containing coated Mg-Zn alloy cage. The size was 12 mm10 mm4.5-6 mm with a 7-degree wedge angle. The porous structure was designed in the central area of 56 mm. (b) The operating field after cage implantation and titanium plate fixation. (c) The sketch map of the measurement of disc space height (DSH) in a cage segment (6 weeks). Three black lines indicate the measured height of the anterior, midpoint, and posterior disc space, and the black arrow indicates gas accumulation in front of the disc space. (d) Stiffness measurement by a nondestructive method using a nonconstrained testing apparatus.

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