Fig. 3From: A novel bone cement injector augments Chinese osteoporotic lumbar pedicle screw channel: a biomechanical investigationInjection of bone cement, insertion of pedicle screw and a mechanical tester. A The sheath of the bone cement injector was inserted along the prepared channel in the biomechanical test module of polyurethane (The white cuboid block); B 2.5Â ml of acrylic bone cement mixed with 1.25Â ml liquid and was injected into the sheath; C A steel rod was putted into the hollow sheath to push out the remainder of the acrylic bone cement into the module; D The CD HORIZON M8 pedicle screw was inserted into the channel with a manual torque wrench at a rate of 3 rev/min evenly by a torque wrench; E The MTS-858 mechanical tester tested the mechanical characteristics of the moduleBack to article page