Biomechanics of Posterior Dynamic Fusion Systems in the Lumbar Spine: Implications for Stabilization With Improved Arthrodesis.

Study Design: A comparative biomechanical human cadaveric spine study of a dynamic fusion rod and a traditional titanium rod.

Objective: The purpose of this study was to measure and compare the biomechanical metrics associated with a dynamic fusion device, Isobar TTL Evolution, and a rigid rod.

Summary Of Background Data: Dynamic fusion rods may enhance arthrodesis compared with a rigid rod.