Biomechanical Comparison of Transforaminal Lumbar Interbody Fusion With 1 or 2 Cages by Finite-Element Analysis

Abstract

Single-cage TLIF approximates biomechanical stability and increases the stress of the bone graft. The use of a single cage may simplify the standard TLIF procedure, shorten operative times, decrease cost, and provide satisfactory clinical outcomes. Thus, single-cage TLIF is a useful alternative to traditional 2-cage TLIF.