Fig. 4From: Biomechanical analysis of reduction technique for lumbar spondylolisthesis: anterior lever versus posterior lever reduction methoda Torque value of Cobb recorded by mini digital torque wrench; b Cobb angular motion recorded by an electric angle meter; c Total axial force recorded by an MTS machine; d Torque value recorded by a mechanical testing system machine; e Force distribution at L3/L4 level; and f Force distribution at L5/S1 level; *p < 0.05, **p < 0.01Back to article page