Table 1.

Results of onlay technique with defect closure in incisional hernia repair in RCTs.

References	Patients	Hernia type	Inclusion/Exclusion	Technique	Post-operative complications	Recurrence	Hospital stay
Venclauskas et al. (2)	n = 57	Incisional	Male n = 22 female n = 35	Defect closure	Wound complications 49.1%, Seroma 45.6%	10.5% after 12 months follow-up	5.9 ± 2.3 days
Weber et al. (3)	n = 224	Incisional	Hernia orifice >25 cm2	Defect closure	— —	12% in a 5 years follow-up	— —
Natarajan et al. (20)	n = 13	Incisional	Exclusion of previous mesh repair	Defect closure	Seroma 38.5%, wound infection 16.7%	— —	— —
Sevinc et al. (21)	n = 50	Incisional	Exclusion of patients with a BMI >40	Defect closure	Wound complications 24%	6% with a median follow-up of 37.1 months	3.36 ± 1.9 days
Demetrashvili et al. (22)	n = 78	Incisional	Exclusion of recurrent incisional hernias	Defect closure	Wound complications 50%, Seroma 41%	5.1% in a mean follow-up of 4.6 ± 1.0 years	5.5 ± 2.7 days