
Keywords: انرژی هیستریزی; NP; Nucleus Pulposus; AF; Annulus Fibrosus; PBS; Phosphate Buffered Saline; J; Polar Moment of Inertia; h; Disc Height; Ïax; Applied Stress; K; Torsional Stiffness; U; Strain Energy; EH; Hysteresis Energy; G; Apparent Torsional Modulus; WLS; Weighted Lea