Table 3.

The comparison of complications between group 1 and group 2.

Complications	Nonoperative of posterior pelvic (group 1, n = 36)	Operative of posterior pelvic (group 2, n = 32)	p level
			0.688
Nerve root injury	1 (preoperative)	3(2 patients preoperative, 1 patient postoperative)
VTE	6 (DVT)	8 (7 DVT, 1 nonfatal PE)
Implant-related	1 LFCN injury (recovered) 1 asymptomatic screw loosening and delayed union of the pubic rim	1 implant irritation

VTE: venous thromboembolism; DVT: deep vein thrombosis; PE: pulmonary embolism; LFCN: lateral femoral cutaneous nerve.