Fig. 2

Intraoperative photos. a The internal inguinal ring is weak, but no obvious hernia sac (white arrows). b Type B HCN, completely located in the inguinal canal (white arrowheads). c The round ligament was cut off and the posterior wall of HCN was dissociated from the cephalic side until the HCN was finally removed completely. d A lightweight polypropylene mesh was introduced to cover the inguinal myopectineal triangle and absorbable tacks were used to fix the mesh