Fig. 2
From: A Novel growth guidance system for early onset scoliosis: a preliminary in vitro study
The sample of the novel growth guidance system installed on the MTS test system. The novel growth guidance system (4.5-mm system) was installed on the simulated vertebrae (UHMWPE module) and tested by MTS test system. The sliding poly-axial pedicle screws were placed on the upper simulated vertebra and captured polished parts of the rods with the UHMWPE gaskets. The fixed-head pedicle screws were placed on the lower simulated vertebra and locked un-polished part of the rods