Biomechanical comparison of a novel transoral atlantoaxial anchored cage with established fixation technique - a finite element analysis

Table 2 Results From Validation of the FEM of the Upper Cervical Spine (°)

Load case	Joint	Panjabi et al. [24]	Panjabi et al. [25, 26]	Zhang et al. [15]	Intact model	Unstable BI model
Flexion	C0-C1	3.5 ± 0.6	10.8–17.2	14.5	12.5	-
Flexion	C1-C2	11.5 ± 2.0	9.8–16.2	15.0	12.5	16.9
Extension	C0-C1	21.9 ± 1.9	10.8–17.2	13.3	16.7	-
Extension	C1-C2	10.9 ± 1.1	6.0–16.0	12.7	12.2	14.2
Lateral bending	C0-C1	5.6 ± 0.7	2.6–8.6	5.5	3.7	-
Lateral bending	C1-C2	4.0 ± 0.8	3.8–19.6	5.9	5.0	5.2
Axial rotation	C0-C1	7.9 ± 0.6	1.0–10.5	8.5	8.3	-
Axial rotation	C1-C2	38.3 ± 1.7	24.2–46.4	30.6	28.5	30.1

ISSN: 1471-2474