Outside abdominal wall mass with fixed tenderness

The lateral abdominal mass with fixed tenderness is the main clinical sign of meniscus 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 (Figures 1, 2). 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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