The incidence rates of such major complications as wound dehiscence , infection , and moderate to severe edema were 1.5 % ( 1/65 ) , 3.1 % ( 2/65 ) , and 4.6 % ( 3/65 ) , respectively , in the experimental group in comparison with 12.3 % ( 8/65 ) , 15.3 % ( 10/65 ) , and 30.7 % ( 20/65 ) in the control , with statistically significant differences between the two groups ( P < 0.05 ) .