Tendinous Inscriptions of the Rectus Abdominis: A Comprehensive Review.

Cureus. 2018 Aug 4;10(8):e3100. doi: 10.7759/cureus.3100.

Rai R1, Azih LC, Iwanaga J, Loukas M, Mortazavi M, Oskouian RJ, Tubbs RS.

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Abstract

The rectus abdominis muscles are interrupted by tendinous inscriptions, which typically appear as fibrous bands crossing the muscle. The current literature on tendinous inscriptions is scarce; hence, this review will provide a detailed overview of their anatomical description, including their variation, embryology, comparative anatomy, and clinical application. Understanding the anatomy and function of the tendinous inscription assists in providing clinical relevance and in guiding reconstructive surgeons in their surgical planning and design.

KEYWORDS:

anatomy; anterior abdominal wall; rectus abdominis muscle; segmentation; tendon

Figure 1

Anterior abdominal wall of a cadaver noting the tendinous intersections (arrows).

Note the difference in shape between the upper left and right intersection.

Figure 2

Anterior abdominal wall of a cadaver noting five intersections on the dissected right side.

A gastrostomy tube is noted as reference.

Figure 3

Reflection of the right-sided rectus abdominis demonstrates the neurovascular pedicles.

A gastrostomy tube is noted as reference.

Figure 4

MRI of the anterior abdominal wall.

Note the tendinous intersections (arrows). MRI: magnetic resonance imaging