Application of different thresholds for instrumentation device testing in minimally invasive lumbosacral spine fixation.

The main aim of this study was evaluating the reliability of stimulus-evoked electromyography (using different thresholds for stimulation of the instrumentation devices) for minimally invasive pedicle screw placement in the lumbosacral spine. A threshold of 5 mA was applied for the pedicle access needle. 7 mA was applied for the tapscrew and pedicle screw stimulation.

"One-Shot" CT image navigated circumferential fusion in a single lateral decubitus position: surgical technique.

The purpose of this paper was to summarize the surgical peculiarities of a combined approach for minimally invasive lateral retroperitoneal interbody fusion and posterior percutaneous pedicle screw instrumentation in the same lateral decubitus position using intraoperative computed tomography-based navigation.