Semilunar hernia

The anterior and posterior layers of the rectus abdominis sheath heal at the lateral edge of the rectus abdominis muscle, forming a semilunar, arcuate tendon structure protruding outward, that is, the meniscus. The peritoneal or abdominal organs protrude through the lateral edge of the lateral rectus abdominis, known as a spigelian hernia, or a lateral abdominal wall hernia. Spige (1617) first described the anatomy of the meniscus, so it was also called a spigelian hernia.

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