Table 3.

Perioperative outcomes.

Characteristic	Single-screw	Dual-screw	P value
Operative time (min)	46.87 ± 5.23	56.59 ± 5.20	<0.001
Number of intraoperative fluoroscopy	15.42 ± 3.00	18.72 ± 2.06	<0.001