In Plain English
The obliques are the muscles running along the sides of your abdomen, extending from the lower ribs to the pelvis and the connective tissue at the front of the abdomen. They rotate and bend your torso, help stabilize your spine, and keep your trunk rigid whenever force tries to twist or tip your body.
Technical Definition
The obliques consist of the external obliques and internal obliques, layered along the lateral abdominal wall. The external oblique originates from the outer surfaces of ribs 5–12, while the internal oblique originates primarily from the thoracolumbar fascia, iliac crest, and inguinal ligament. Together, they insert into the linea alba, lower ribs, and pubis. Collectively, they produce trunk rotation, lateral flexion, posterior pelvic tilt, and anti-rotational stabilization while contributing to intra-abdominal pressure and trunk stiffness during loaded movement.
















