Role of three-dimensional endoanal ultrasound in assessing the anal sphincter morphology of female patients with chronic proctalgia

Table 2 Three-dimensional endoanal ultrasound parameters in the chronic proctalgia and normal groups

Parameter	CP in mm	Control in mm	P value
IAS length	26.28 ± 3.59	28.87 ± 4.84	< 0.05
IAS thickness	1.76 ± 0.43	1.63 ± 0.38	NS
EAS + PR length	30.71 ± 4.48	31.40 ± 4.43	NS
PR thickness	9.67 ± 1.57	8.85 ± 0.97	< 0.05

Data are presented as mean ± SD. CP: Chronic proctalgia; IAS: Internal anal sphincter; EAS: External anal sphincter; PR: Puborectalis muscle.