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

Figure 5

At L3-L4 transition segment, the ROMs, disc stresses, and FCF in the model implanted with dynamic Isobar damper or Dynesys were compared with those of no fixator. The dynamic Isobar damper afforded the decreased FCF, ranging from 15% (bending) to 41% (rotation), more than the Dynesys did.