https://www.selleckchem.com/pr....oducts/fluorescein-5
Postoperative computed tomography (CT) was performed to check screw malposition or construction failure. Of the 10 C1 pedicle screws on postoperative CT, 20% of screws (grade A) were in the ideal position while 80% of screws (grade occupied a safe position. Overall, 100% of screws were safe (grade A or . There were no iatrogenic neurological deficits, VA injury. Freehand placement of the C1 pedicle screw through the direct visualization technique of the pedicle and serial dilatation technique is safe and e
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