Fibrosis after surgery is scar tissue, the body’s usual way of patching a cut, whether the cut is on the skin or deep inside. It becomes a problem only when the body overbuilds that patch or lays it down where it doesn’t belong. The same healing process can leave anything from a faint line to a stiff knee or organs stuck together, which is why treatment depends on where the scar sits.
Why Some Healing Turns Into Too Much Scar Tissue
After an injury, a growth signal tells repair cells to lay down collagen, the protein that makes up scar tissue.1PubMed Central. The role of the TGF-β family in wound healing, burns and scarring: a review Normally the signal fades once the gap is closed and the repair cells are cleared away. When it stays switched on, the cells keep overworking and pile up far more collagen than the wound needs.2PubMed. Current potential therapeutic strategies targeting the TGF-β/Smad signaling pathway to attenuate keloid and hypertrophic scar formation Long-lasting inflammation, too many new blood vessels, and repair cells that fail to die off on schedule can all feed the problem.3PubMed Central. The role of the TGF-β family in wound healing, burns and scarring: a review Steady pulling tension across a wound is one reason those cells can linger.4PubMed Central. The role of the TGF-β family in wound healing, burns and scarring: a review
That is also why incisions over joints, the chest, or the shoulders are more likely to turn thick or raised. Daily movement tugs on them again and again, and the repeated pull can keep repair cells active longer.
The collagen in a problem scar is different from the collagen in normal skin. There is more of it, and its fibers are tangled rather than neatly arranged.5PubMed Central. Mini review on collagens in normal skin and pathological scars: current understanding and future perspective The fibers are also more heavily bonded to one another, which makes them thicker and stiffer.6PubMed Central. Mini review on collagens in normal skin and pathological scars: current understanding and future perspective After one kind of breast surgery, scars with a higher share of a tougher type of collagen compared with a softer type were rated worse.7PubMed Central. Correlation between Collagen Type I/III Ratio and Scar Formation in Patients Undergoing Immediate Reconstruction with the Round Block Technique after Breast-Conserving Surgery
Tangled, cross-linked collagen doesn’t stretch the way normal skin does, so a scar can feel firm, tight, or ropey and pull when you move, even months later. Even a good scar never becomes identical to what it replaced. It is a little less stretchy and lacks features such as hair follicles and sweat glands.
Scars also change over time. Early on they are red and active, and over many months they usually fade and soften as extra collagen is slowly remodeled. A scar that is still firm or tender a few months in isn’t necessarily abnormal, since maturing can take a year or longer. Scarring deep inside the body can’t be seen at all, so its effects show up indirectly, as tightness, pulling, or reduced movement near the surgery site.
Raised Scars and Keloids on the Skin
A hypertrophic scar is a raised, thick scar where dense collagen fills the incision but stays inside its edges.8PubMed Central. Mini review on collagens in normal skin and pathological scars: current understanding and future perspective A keloid grows beyond the original wound into the surrounding skin.9PubMed Central. Mini review on collagens in normal skin and pathological scars: current understanding and future perspective Both can be red, itchy, or painful, and treatment can relieve those symptoms.10PubMed Central. The application of corticosteroids for pathological scar prevention and treatment: current review and update Genes strongly influence how a person’s skin heals, so some people scar more readily than others.
Telling a normal scar from a problem one comes down to timing and shape. Normal scars are often pink and slightly raised for weeks, then flatten and fade. One that keeps thickening after a few months suggests a raised scar. Spreading past the cut line is the key sign of a keloid. Keloids are more common in people with darker skin and on the chest, shoulders, and earlobes.
A family history of keloids or heavy scarring raises the likelihood that you will scar the same way, which is useful to know before any elective procedure. Infection, or a wound that opens and heals slowly, can add to scarring, which is one reason to keep a fresh incision clean and follow the wound instructions.
Mention a scar to a doctor if it keeps growing, itches badly, hurts, or limits movement. Raised scars tend to be easier to treat early than once they are old.
Scar Tissue Inside the Body
Adhesions are internal scar bands that join organs that are normally separate. They form after more than half of all abdominal operations,11PubMed Central. Intra-abdominal Adhesions and most never cause symptoms.12PubMed. Postoperative Abdominal Adhesions: Clinical Significance and Advances in Prevention and Management But about 2 in 100 people after abdominal or pelvic surgery develop a bowel blockage from adhesions that needs another operation.13PubMed Central. Burden of adhesions in abdominal and pelvic surgery: systematic review and met-analysis Adhesions are behind more than half of bowel blockages after surgery.14PubMed Central. Burden of adhesions in abdominal and pelvic surgery: systematic review and met-analysis
They can also cause long-lasting belly or pelvic pain, pain during sex, and trouble getting pregnant.15PubMed Central. Intra-abdominal Adhesions In people with ongoing pain after belly surgery who had a camera examination, adhesions were the likely cause in more than half.16PubMed Central. Burden of adhesions in abdominal and pelvic surgery: systematic review and met-analysis They also make later operations harder, adding about 15 minutes and raising the chance of accidentally nicking the bowel to about 3 in 100.17PubMed Central. Burden of adhesions in abdominal and pelvic surgery: systematic review and met-analysis
Adhesion pain is often described as pulling or stabbing, and it can change with posture, movement, or a full bowel, though the pattern varies a lot. Adhesions don’t show up on standard X-rays or most scans, so doctors often suspect them from your history and may only confirm them with a camera examination. Other conditions cause similar belly or pelvic pain, so the diagnosis often comes after those have been considered.
A blockage happens when a band of scar tissue kinks or pinches a loop of intestine, so food, fluid, and gas can’t pass normally. Fluid and gas build up behind the narrowed spot, which explains the swelling, the crampy waves of pain, and the vomiting. A partial blockage may ease with hospital care such as fasting and fluids, but a complete one, or one that cuts off blood supply to the bowel, can need urgent surgery. Crampy belly pain, swelling, vomiting, and not passing gas or stool together are an emergency. It can happen months or even years after the original operation, so go to an emergency department rather than waiting it out.
Scar tissue around the spinal nerves after back surgery can cause back and leg pain.18PubMed. Inhibition of epidural scar tissue formation after spinal surgery: external irradiation vs. spinal membrane application Among people with persistent pain after back surgery examined with a tiny camera, about 9 in 10 had significant scarring.19PubMed. Incidence and severity of epidural fibrosis after back surgery: an endoscopic study The more scar tissue people had, the more back pain they tended to report.20PubMed. Association between peridural scar and persistent low back pain after lumbar discectomy
Scarring is a contributor rather than a certain explanation, though. Ongoing pain can also come from the original problem, a new disc issue, or nerve damage. An MRI with contrast dye can show scar tissue around nerves, which helps doctors tell it apart from a recurring disc problem.
Arthrofibrosis is excess scar tissue inside a joint. After a knee replacement it limits bending, causes pain, and makes daily tasks harder.21PubMed. Arthrofibrosis After Total Knee Arthroplasty: A Critical Analysis Review Everyone has some swelling and stiffness after the operation, but here the scarring keeps tightening the joint capsule and surrounding tissue beyond the normal recovery. Stiffness that improves slowly with therapy is common; stiffness that stalls or worsens is different.
Warning signs include bending that stops improving or goes backwards during physical therapy, and a knee that feels tight and painful at the end of its range. Tell your surgeon early, since early stiffness has more treatment options.
Scar tissue can also squeeze or tether a nerve, causing burning or shooting pain.22PubMed Central. Scar Tissue Causing Saphenous Nerve Entrapment: Percutaneous Scar Release and Fat Grafting This is one reason nerve symptoms can return after surgery to free a nerve.23PubMed. Treatment of recurrent peripheral nerve entrapment problems: role of scar formation and its possible treatment
Treating Skin Scars With Massage, Injections, and Surgery
Hands-on scar massage can loosen a scar and reduce how tightly its collagen fibers are bonded.24PubMed Central. Effectiveness of various methods of manual scar therapy It made burn scars noticeably more flexible.25PubMed Central. Physical Management of Scar Tissue: A Systematic Review and Meta-Analysis For surgical scars, massage may ease pain and improve movement, though studies vary too much to say exactly how to do it.26PubMed. Is massage an effective intervention in the management of post-operative scarring? A scoping review
Wait until the wound is fully closed with no scabs, and ask your surgeon or therapist when to start. Then use firm circles and side-to-side strokes with lotion for a few minutes daily. Massage works on a scar’s stiffness and tightness, so it is more likely to change how a scar feels and moves than how it looks. Consistency matters more than force, and it should never hurt enough to irritate the skin or reopen the incision. If the scar gets redder, more swollen, or more painful, stop and have it checked.
Steroid injections are the main medical treatment. They flatten the scar, soften it, reduce redness, and ease pain and itching.27PubMed Central. The application of corticosteroids for pathological scar prevention and treatment: current review and update Between half and nearly all scars respond, but 1 to 5 in 10 come back.28PubMed Central. The application of corticosteroids for pathological scar prevention and treatment: current review and update Combining a steroid with botulinum toxin or with the drug 5-fluorouracil (5-FU) appears to work better than a steroid alone.29PubMed. The Efficacy of Drug Injection in the Treatment of Pathological Scar: A Network Meta-analysis If a steroid alone doesn’t flatten a scar or it keeps returning, those add-ons are a reasonable next conversation with a dermatologist or plastic surgeon. They are given as injections in the clinic, not tried at home.
At a visit, the doctor injects small amounts directly into the scar, usually repeated every few weeks over several sessions. Improvement is gradual, with flattening and softening appearing over weeks to months rather than after one visit. The injection can sting, and firm scars can be hard to inject, so doctors sometimes use numbing or other measures. Too much steroid causes thinning or lightening of the surrounding skin, so doctors adjust the dose and spacing to the scar.
Surgically removing a keloid on its own often leads to regrowth. When removal was followed by steroid injections and ointment, about 1 in 7 keloids came back over roughly 3 years.30PubMed. A new uniform protocol of combined corticosteroid injections and ointment application reduces recurrence rates after surgical keloid/hypertrophic scar excision Removal creates a new wound that can itself scar, so keloids can return larger without follow-up. Surgery is usually considered when a scar is large, bothersome, or hasn’t responded to injections, with the follow-up injections planned from the start. Expect a recovery period and regular check-ins for a year or more to catch regrowth early.
Treating Stiff Joints and Internal Adhesions
Treatment for a knee stiffened by scar tissue ranges from bending it while you’re asleep under anesthesia to keyhole surgery to clear scar, open surgery, or redoing the replacement.31PubMed. Management of stiffness following total knee arthroplasty: a systematic review These are compared to pick the least invasive step that restores movement.32PubMed. Treatment of arthrofibrosis and stiffness after total knee arthroplasty: an updated review of the literature
Timing guides the choice. Stiffness caught within the first weeks to months is often treated with intensive therapy or manipulation under anesthesia, while stiffness that has settled in longer more often needs surgery. Manipulation is gentler and has no incision, but it can’t remove dense scar, so it suits earlier or milder cases. Redoing the replacement is a bigger step, reserved for cases where the implant itself is a cause, such as when it is positioned poorly.
Keyhole surgery to cut adhesions relieves symptoms long-term in about half to nearly 9 in 10 people,33PubMed. Laparoscopic lysis of adhesions but it risks nicking the bowel in up to about 1 in 6 operations.34PubMed. Laparoscopic lysis of adhesions In a 12-year trial for chronic belly pain, people whose adhesions were cut were less often pain-free and needed more extra operations than those who had a sham procedure.35PubMed. Twelve-year outcomes of laparoscopic adhesiolysis in patients with chronic abdominal pain: A randomized clinical trial Surgery tends to make the most sense when adhesions are clearly causing a blockage, not when they are a suspected cause of vague chronic pain.
Every operation is a new injury that heals by scarring, which is why repeated surgeries can build more adhesions. Before agreeing to adhesion surgery, ask whether the adhesions are actually the cause of your pain, what the risk of new adhesions and bowel injury is, and what non-surgical pain management you could try first.
Heart scarring is different. There is no medicine that removes scar tissue in the heart. Treatment targets its cause and its effects, with drugs such as ACE inhibitors and beta blockers supporting weakened heart function. These medicines help the heart pump more easily and reduce strain but don’t dissolve existing scar.
Can Fibrosis Be Prevented
Barrier films and gels placed between organs during surgery consistently reduce adhesions.36PubMed Central. Prevention of adhesive small bowel obstruction by anti-adhesion barriers: do they really work? One film, Seprafilm, cut repeat operations for adhesion blockages by about half.37PubMed Central. Prevention of adhesive small bowel obstruction by anti-adhesion barriers: do they really work? Keyhole surgery itself causes fewer adhesions, and the film still helped in keyhole operations.38PubMed Central. Prevention of adhesive small bowel obstruction by anti-adhesion barriers: do they really work? Gel after womb surgery for infertility reduced new adhesions, with about 1 in 9 women benefiting.39PubMed Central. Anti-adhesion barrier gels following operative hysteroscopy for treating female infertility: a systematic review and meta-analysis
Adhesions form when raw surfaces touch while healing, so a film or gel keeps them apart long enough for each surface to heal separately. The body absorbs them over days to weeks, so they don’t remain as foreign material. Surgeons choose them according to the operation, and not every procedure suits them. So before an operation, ask whether keyhole surgery is an option and whether a barrier will be used. If you form keloids, say so, so the team can plan closure and follow-up.
Implant materials matter too. Hernia meshes provoke inflammation for years, and more inflammation means more scar tissue.40PubMed. Foreign body reaction to meshes used for the repair of abdominal wall hernias Lighter meshes with larger pores trigger less scarring than heavy ones,41PubMed. Impact of polymer pore size on the interface scar formation in a rat model because the larger pores leave room for tissue to grow through, which tends to mean less stiff scar around the mesh. If you are having a hernia repair, ask which mesh will be used and why, since the choice depends on the hernia and your health. Engineers are also testing coatings that stop the body from walling off implants with scar tissue, so far in animals.42MIT News. Adhesive coatings can prevent scarring around medical implants43PubMed Central. Antifouling Immunomodulatory Copolymer Architectures that Inhibit the Fibrosis of Implants
Be wary of supplements that promise to prevent fibrosis. Those claims rest on customer surveys, not trials. Good general nutrition supports healing, but no supplement is proven to stop fibrosis. Not smoking does help wounds heal.