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Bulging and Sore Abs Years After Tummy Tuck
It depends a bit on what your surgery involved and when you started noticing the bulge. Abdominal contour is dependent on: Skin envelope, Abdominal fat (subcutaneous and intra-abdominal), muscles tightness, intrinsic swelling, fluid collections, and skin envelope. People complaining of "abdominal bulge" after tummy tuck typically do not have issues with too much skin - that points to issues underneath the skin. Abdominal fat: This can be an issue in people who may be a little bit over their ideal body weight at the time of abdominoplasty. Ways to fix this include the tried and true diet and exercise or liposuction. Be sure to allow enough time between tummy tuck and liposuction to minimize complications. Muscle tightness: Muscle plication (or tightening) is usually a part of abdominoplasty. Either failure of the sutures or some laxity can cause a bulge. If the change in your contour was sudden or if you felt a pop - think about the plication having ruptured. Swelling: This can be the most common cause of contour issues post-abdominoplasty. Patients typically have swelling for two reasons. First surgery causes trauma and the body's response to trauma is to bring additional fluid into the area that has been traumatized. In addition, abdominoplasty involves dividing lymphatic channels (very very small conduits that normally pull fluid out of tissue) - until these channels grow back the area will not be able to remove excess fluid. It is usually the most dependent (lowest) part of the surgery that stays swollen the longest. Fluid collections: Seromas (serous fluid collections) or hematomas (collections of old blood) can cause distortions of contour. Normally this will improve on its own but may require drainage. In your case it sounds like the superior muscle plication may be a bit loose or has ruptured. That would account for the bulge and the asymmetry. This can be confirmed with a CT scan. Correction would require additional surgery.
Clinical Context
The linea alba is the fibrous midline seam where plication sutures reinforce the rectus muscles after a tummy tuck. That area heals with scar tissue rather than muscle, so it can take time to gain full strength. Coughing, straining, or heavy lifting raises abdominal pressure and stresses the repair. If a suture loosens or the scar stretches, that spot can bulge outward with exertion. A sudden change or a popping sensation is worth mentioning to your surgeon promptly.

