Table 2 Radiological assessment of placed screws for the augmented reality surgical navigation (ARSN) and free-hand (FH) groups.

From: Augmented reality navigation with intraoperative 3D imaging vs fluoroscopy-assisted free-hand surgery for spine fixation surgery: a matched-control study comparing accuracy

Screw assessment

ARSN group

FH control group

p-value

Total number of screws rated

262 (100%)

288 (100%)

0.86

Thoracic spine

166 (63.4%)

180 (62.5%)

 

Lumbosacral spine and iliac

96 (35.6%)

108 (37.5%)

 

Screw placement grade

Grade 0

166 (63.4%)

88 (30.6%)

<0.0001

Grade 1

80 (30.5%)

170 (59.0%)

<0.0001

Grade 2

16 (6.1%)

30 (10.4%)

05

Grade 3

0 (0.0%)

0 (0.0%)

1

Accuracy

246 (93.9%)

258 (89.6%)

<0.05