In these cases, the bulge often looks more prominent when sitting or bending because the scar stays fixed while the tissue above it folds forward. Importantly, bulges caused by scar tethering are different from abdominal muscle separation, and require a different surgical approach.

A C-section shelf is most often caused by scar tethering at the incision site, sometimes combined with skin laxity or muscle separation, rather than by fat alone.
For more information about scarring and treatments available, see our Scar Revision page.