Biomechanical Comparison between Isobar and Dynamic-Transitional Optima (DTO) Hybrid Lumbar Fixators: A Lumbosacral Finite Element and Intersegmental Motion Analysis

Figure 4

All the DTO, Isobar, 1-level, and 2-level static fixator models revealed various extents of junctional problems at the cephalic segment (L2-L3) more than the caudal one (L5-S1). Both the DTO and Isobar dynamic hybrid fixators had better performance than the 2-level static fixator to increase (a) motion and decrease (b) disc stress at the L3-L4 transition segment for balancing junctional problems.

(a)

(b)