Stallions with enlarged inguinal rings and inguinal canals have a higher risk for inguinal herniation. When a portion of the small intestine gets incarcerated into the inguinal canal, the stallion shows acute signs of colic. This inguinal hernia is a life threatening situation because it can cause small intestinal necrosis and immediate treatment is necessary. 

To prevent inguinal herniation the stallion can be castrated. After testis removal, the inguinal canal obliterates spontaneously within 2 weeks. If castration is not desired, a laparoscopic narrowing of the inguinal ring and inguinal canal can be performed in the standing horse. With a good surgical technique the procedure is highly effective.