Rectus abdominis hematoma

The rectus abdominis is located on both sides of the ventral white line (the midline of the abdomen) and is completely enclosed by the rectus abdominis sheath. The rectus abdominis has 3 to 4 tendon marks, which are closely adhered to the anterior layer of the rectus sheath, but not adhered to the posterior layer of the rectus sheath. There are blood vessels at the tendon marks. The superior abdominal wall artery, the terminal branch of the internal thoracic artery, descends along the rectus abdominis within the rectus abdominis sheath. The inferior abdominal wall artery originates from the external iliac artery and finally enters the rectus abdominis sheath to anastomize the superior abdominal wall artery behind the rectus abdominis. When the blood vessels behind the rectus abdominis rupture and bleed under the action of certain factors (external force or abdominal pressure, etc.), hematomas that are easily formed in the tendon sheath are called injuries in the rectus abdominis.