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We analyzed clinical usefulness of the high resolution imaging system in a hybrid operation room (OR) for posterior lumbar interbody fusion. A total of 17 patients with lumbar spondylolisthesis between February 2014 and August 2016 were included. Multi-axis imaging system in a hybrid OR was used in 12 patients (hybrid OR group); the conventional C-arm fluoroscopy, in 5 patients (C-arm group). The time to confirm the first percutaneous pedicle screw (PPS) angle (hybrid OR, 80 vs C-arm, 249 s; P = 0.0026) and the second to the last PPS angle (77 vs 90 s; P = 0.040) were shorter in the hybrid OR group. Placement accuracy was higher in the hybrid OR group (88.0 vs 59.1%; P = 0.010). Irradiation dose was significantly lower in the C-arm group (462 vs 102 mGy; P = 0.0013). This study suggested that the accuracy of PPS placement and time to confirm the PPS angle are the advantages in a hybrid OR.

Advantages and Disadvantages of Multi-axis Intraoperative Angiography Unit for Percutaneous Pedicle Screw Placement in the Lumbar Spine