Why scars give way
A healed surgical scar recovers most, but never all, of the strength of the original tissue. Where healing was compromised — by wound infection, by a haematoma, by smoking, diabetes, steroids, or by significant weight gain since — the repair line can stretch and eventually separate. The skin stays intact; the muscle layer beneath it does not.
This can happen decades later. It is also increasingly seen at the small port sites used for keyhole surgery, and along Caesarean section scars, where the bulge is often dismissed as post-pregnancy shape change.
Typical features
- A soft bulge along or just beside the line of a scar
- More obvious when standing, straining or sitting up
- Gradual enlargement over months
- A dragging or pulling sensation rather than sharp pain
- Sometimes several separate bulges along one long scar
Why these are not all the same operation
Incisional hernias range from a two-centimetre port site defect that takes twenty minutes to close, to a large midline hernia containing much of the small bowel, where the abdominal wall has to be reconstructed. Quoting a single approach for all of them is misleading. Assessment establishes the size and number of defects, the quality of the surrounding muscle, and whether a CT scan is needed before planning.
Robotic repair has changed what is achievable in this group. It allows mesh to be placed accurately in the correct plane behind the muscle, with the defect closed under controlled tension, through small incisions rather than reopening the original scar. For medium-sized and complex incisional hernias in particular, that means less pain and a faster recovery than the traditional open equivalent.
Urgent assessment is needed if
- The bulge becomes tense, tender or irreducible
- You develop colicky abdominal pain with vomiting
- The skin over the hernia breaks down or discolours
Recurrence, and how it is minimised
Incisional hernias have a higher recurrence rate than groin hernias. The factors that most influence that are the plane the mesh is placed in, whether the defect itself is closed rather than simply bridged, adequate mesh overlap, and modifiable patient factors — smoking and weight being the two that make the largest difference. Those are addressed openly before surgery rather than after a recurrence.
Local access
Assessment takes place at Nuffield Health Warwickshire Hospital, Leamington Spa, with patients referred from across Warwickshire, Coventry and Solihull. Straightforward repairs start from £4,500; larger or complex reconstructions are quoted individually and honestly after assessment, and a date is normally available within 7 days for the simpler cases.
Common questions
How long after surgery can an incisional hernia appear?
Most appear within the first two years, but they can present ten or twenty years later, particularly after weight gain or a period of heavy coughing or straining.
I have a bulge above my Caesarean scar — is that a hernia?
It may be. It can also be scar tethering, a fat pad, or separation of the abdominal muscles. These feel different on examination and are managed differently, so it is worth having it looked at rather than assumed.
Can a keyhole port site really herniate?
Yes, especially the larger ports and the umbilical port. They are small hernias but the narrow defect means they can trap tissue.
Is robotic repair better than open surgery?
For many incisional hernias it offers meaningfully less pain and faster return to normal activity because the original scar does not have to be reopened. It is not automatically the right choice for every hernia, and the reasoning is explained to you rather than assumed.
Will I need a scan before surgery?
For anything other than a small, obvious defect, a CT scan is usually worthwhile. It shows the true size of the defect, what is inside it, and the state of the muscle, and it allows the operation to be planned properly.