Transversus Abdominis: Pain Pattern and Treatment
The transversus abdominis is the deepest of the flat abdominal muscles, wrapping the trunk like a corset from the lower ribs and the spine to the midline. It braces the trunk before every lift and drives a cough and a laugh. Its documented pattern is a band of pain across the upper abdomen just under the ribs, from trigger points at the rib margin. It is one of the muscles behind belly pain with normal scans and scopes, and it is worst coughing, laughing, and bracing. It relates to the rectus abdominis and obliques pages.
Attachments and action
Origin: The inner surfaces of the lower six rib cartilages, the thoracolumbar fascia, the iliac crest, and the outer third of the inguinal ligament.
Insertion: The linea alba through its aponeurosis, the pubic crest, and the pecten pubis.
Action: Compression of the abdomen; it braces the trunk, drives forced expiration, and steadies the spine before movement.
Where the pain is felt: A band across the upper abdomen just under the ribs. Worst coughing, laughing, sneezing, and bracing to lift. Sometimes a feeling that something is wrong inside the belly, with normal tests.
Common causes: A coughing illness; abdominal surgery and the scar afterward; pregnancy and the months after; heavy lifting with a held breath; sit-ups and planks past the point of form; a sudden twist with a load; chronic constipation and straining.
Patients say: "A band across my upper stomach when I cough." "The GI workup was normal." Pain under the ribs bracing to lift. "It started after my surgery and never left."
When to get evaluated: Abdominal pain with fever, vomiting, blood in the stool, unexplained weight loss, or tenderness to a light touch needs medical evaluation before anything else. A bulge in the abdominal wall that appears with straining needs assessment for a hernia. Upper abdominal pain that comes with exertion or with pressure in the chest needs cardiac evaluation first.
How this muscle is examined and treated
Examination has you cough and brace, then presses along the rib margin with the trunk relaxed and again with it braced, which sorts muscle from organ: muscular tenderness gets worse with bracing, organ tenderness does not. Needling here addresses the deep layer at the rib margin, at a shallow angle along the ribs. Assessment and treatment happen in the same visit.
Related conditions
Chronic Pain PatternsLow Back PainPost-Surgical Recovery
This page is educational. It describes muscle referral patterns commonly associated with pain; it does not diagnose your condition. Individual patterns vary. For evaluation of your specific pain, see a licensed clinician. Seek immediate medical care for emergencies. Eugene Baek, L.Ac. · New Jersey License 25MZ00080600