Table 4.

Total complications compared between groups at 2-year follow-up

Complication	Conventional surgery and CoCrMo implant (n = 40; 41 implants)	Modified surgery and titanium implant (n = 39; 39 implants)	p value
Total soft tissue infections	76	13
Absolute risk (95% CI)	0.93 (0.60 to 1.45)	0.17 (0.09 to 0.30)	< 0.01
Risk ratio Group 1 versus 2; Group 2 versus 1 (95% CI)	5.61 (2.71 to 11.57)	0.18 (0.09 to 0.37)
Total hypergranulation or keloid formation events	4	6
Absolute risk (95% CI)	0.05 (0.02 to 0.12)	0.08 (0.03 to 0.21)	0.51
Risk ratio Group 1 versus 2; Group 2 versus 1 (95% CI)	0.64 (0.16 to 2.47)	1.57 (0.41 to 6.10)
Total stoma redundant tissue events	5	0
Absolute risk (95% CI)	0.06 (0.03 to 0.14)	0
Risk ratio Group 1 versus 2; Group 2 versus 1 (95% CI)
Total complications between surgical stages	1	11
Absolute risk (95% CI)	0.01 (0.00 to 0.08)	0.14 (0.08 to 0.25)	0.02
Risk ratio Group 1 versus 2; Group 2 versus 1 (95% CI)	0.09 (0.01 to 0.65)	11.55 (1.54 to 86.75)

CoCrMo = cobalt-chrome-molybdenum.