Intraoperative imaging adequacy and its impact on unplanned return-to-theatre rates in pedicle screw instrumentation

Table 1 Comparing intraoperative imaging saved for patients who returned to theatre within 90 days due to screw malplacement vs those who did not

	Number of patients who returned within 90 days due to screw malplacement	Number of patients who did not return within 90 days for screw malplacement	Total
AP and lateral intraoperative imaging saved	13	714	727
Only lateral intraoperative imaging saved	21	464	485
Only AP intraoperative imaging saved	1	47	48
No intraoperative imaging available	2	73	75
Total	37	1298	1335

AP: Anteroposterior.