SSPI (Moss Miami System) combined with Trans-Endplate Pedicle Pillar System (TEPPS).

<p><b>A</b>, A pair of strain gauges mounted on the pedicle screw measures the screw bending moment. <b>B</b>, The pillar tip has a pin-foot that can be anchored into the endplate to avoid pillar sliding. The pillar was connected to the SSPI through a pillar connector.