Fig. 9From: Biomechanical study of oblique lumbar interbody fusion (OLIF) augmented with different types of instrumentation: a finite element analysisEquivalent stress peak of the fixation instruments as determined in four OLIF models (OLIF + LPF, OLIF + UPSF, OLIF + BPSF and OLIF + TFJF + UPSF) and for six posturesBack to article page