The rectus sheath (also called the rectus fascia[1]) is a tough fibrous compartment formed by the aponeuroses of the transverse abdominal muscle, and the internal and external oblique muscles.

[2] Studies indicate that all three aponeuroses constituting the rectus sheath are in fact bilaminar.

[3] All aponeuroses of the rectus sheath unite at (and and decussate across) the midline, forming the linea alba.

[citation needed] The rectus sheath is a useful attachment for surgical meshes during abdominal surgery.

[6] This article incorporates text in the public domain from page 416 of the 20th edition of Gray's Anatomy (1918)