The Myopectineal Orifice: A Study of Thai Cadavers

OBJECTIVE: This study aimed to determine the myopectineal orifice size measured in Thai human cadavers. MATERIALS AND METHODS: A total of 30 human cadavers, comprising 55 groins, were assessed. Myopectineal orifices (MPOs) were measured in two dimensions: height from the lower border of the conjoined tendon to the upper border of the pectineal ligament and width from the lateral border of pubic tubercle to the medial border of the iliopsoas muscle. RESULTS: The mean MPO size is 7.13 + 0.14 cm in width and 6.66 + 0.32 m in height. The mean width and height in male cadavers are 7.16 + 0.14 and 6.84 + 0.27 cm, respectively. The mean width and height in female cadavers are 7.09 + 0.12 and 6.45 + 0.24 cm, respectively. The mean MPO area is 37.26 ± 0.027 cm(2), compared with the area of mesh graft 10 cm × 15 cm, 150 cm(2). Although the shrinkage of cadaveric tissue and mesh size were adjusted, which were 39.56 ± 0.029 and 81 cm(2), respectively, they were found to be sufficient for the mean MPO area. It was found that the mesh size was sufficient for the mean MPO area. CONCLUSION: A mesh size of 10 cm × 15 cm is found to be the appropriate size to cover the MPO among Thais.