Fig. 3

a: PWIC is composed of AIOMA&TAA. b: PWIC of a female specimen. c: male specimen: PWIC is aponeurotic tissue. d: PWIC of a female specimen consists of two layers of muscle tissue up to the pubic symphysis

In a female cadaveric specimen, the PWIC was continued from the muscle up to the pubic symphysis, and four layers of myofascial tissue were present in the posterior wall, and further dissection confirmed that the muscles in this area were IOMA and TAM. (Fig. 3d)

In a male specimen, the TAM in the inguinal region was free from the PWIC, and the TAA stopped at the stopping point of the TAM and did not fuse with the internal oblique abdominal muscle (IOMA) and the tendon membrane of the posterior wall; the posterior wall of the specimen consisted of the IOMA and the tendon membrane only

We found that the anatomy of the posterior wall of the inguinal canal in the three male cadaveric specimens differed from the conventional anatomical level. In two specimens, the anterior wall of the inguinal canal consisted of the EOMA and the IOMA and its tendinous membrane, the spermatic cord traveled in the inguinal canal, only the TAM and its tendinous membrane existed in the posterior wall of the inguinal canal (Fig. 4a, b, c and d). In another specimen, the IOMA stops at the Arcuate margin, the AIOMA does not extend downward, and the posterior wall of the inguinal canal is TAA ( Fig. 5)