Linea semilunaris

Linea Semilunaris

The Linea Semilunaris is a curved, vertical line found on the lateral edge of the rectus abdominis in the human anatomy. It is one of the anatomical features of the abdomen and plays a significant role in abdominal surgeries.

Linea Semilunaris (shown in red) on the human abdomen

Anatomy

The Linea Semilunaris extends from the pubic tubercle to the ninth costal cartilage, marking the lateral border of the rectus abdominis. It is formed by the aponeuroses of the external oblique, internal oblique, and transversus abdominis muscles.

Clinical Significance

The Linea Semilunaris is a crucial landmark in various abdominal surgeries, including hernia repairs and appendectomies. Surgeons often use it as a guide to avoid damaging underlying structures during surgical procedures.

See Also

• Rectus abdominis muscle
• Obliquus externus abdominis
• Obliquus internus abdominis
• Transversus abdominis muscle
• Hernia
• Appendectomy

References

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