How to Prevent Adhesions After Abdominal Surgery

Preventing adhesions after abdominal surgery involves a combination of strategies rather than any single fix. The most effective approaches include choosing minimally invasive surgery when possible, meticulous surgical technique during the procedure, and placing physical barrier products between healing tissues. Despite decades of research, no method eliminates adhesions entirely, and the fact that they develop in the majority of patients who undergo abdominal operations makes prevention a genuine priority rather than a niche concern.

Why Adhesions Form in the First Place

Understanding the basics of how adhesions develop helps explain why prevention is so difficult. When the inner lining of the abdomen is damaged during surgery, the body kicks off an inflammatory response. Blood vessels at the injured site become more permeable, and a protein-rich fluid floods the area. Within that fluid, inactive fibrinogen converts into fibrin, a sticky substance that forms a gel-like matrix between nearby tissues. Under normal healing conditions, the body’s built-in clot-dissolving system breaks down these fibrin connections within a few days. But when that system is overwhelmed or suppressed, the temporary fibrin bridges persist, fibroblasts move in, and what started as a fragile web matures into a tough, permanent band of scar tissue connecting structures that were never meant to be attached.

1International Journal of Surgery. Intra-abdominal adhesions: Cellular mechanisms and strategies for prevention

Oxygen deprivation at the surgical site makes things worse. When tissues are handled, clamped, or dried out during an operation, local oxygen levels drop. Research on peritoneal cells shows that this hypoxia triggers inflammatory signals that push normal tissue toward an adhesion-forming state.

2PubMed. Effects of hypoxia on the expression of inflammatory markers IL-6 and TNF-a in human normal peritoneal and adhesion fibroblasts

The practical takeaway is that adhesion formation is not a sign of surgical error. It is the body’s wound-healing machinery overshooting its target. Prevention, then, is about tipping the balance back toward normal healing at every stage of the process.

Laparoscopic Surgery Offers a Measurable Advantage

The single biggest modifiable factor in adhesion prevention is the surgical approach. Laparoscopic (keyhole) surgery consistently produces fewer adhesions than traditional open surgery. A large retrospective study comparing over 70,000 patients found that those who had laparoscopic procedures were about a third less likely to be readmitted for adhesion-related problems than those who had open surgery.

3PubMed. Adhesion-related readmissions after open and laparoscopic surgery: a retrospective cohort study (SCAR update)

The reasons are straightforward. Smaller incisions mean less tissue is exposed to air, less handling of the bowel and other organs, and a smaller area of peritoneal damage overall. That said, laparoscopy does not make adhesions disappear. Adhesion formation still occurs after minimally invasive procedures; it just tends to be less extensive.

4PubMed. Comparison of adhesion formation in open and laparoscopic surgery

Not every operation can be done laparoscopically. Emergency surgery, very complex procedures, and situations where the surgeon needs wide visibility may require an open approach. In those cases, the other prevention strategies become even more important.

Surgical Technique During the Operation

Regardless of whether surgery is open or laparoscopic, how the surgeon handles tissues during the procedure matters enormously. The classic principles of adhesion-conscious surgery include minimizing tissue trauma, achieving careful control of bleeding, keeping tissues moist, preventing infection, and avoiding leaving behind foreign material.

5PubMed Central. Preventing Adhesions in Obstetric and Gynecologic Surgical Procedures

Each of these principles maps directly onto the biology of adhesion formation. Rough handling damages more peritoneal surface, creating more sites where fibrin can bridge between tissues. Uncontrolled bleeding leaves behind clots that serve as additional scaffolding. Dry tissues become hypoxic faster, amplifying inflammation. Infection prolongs the inflammatory response and delays the fibrinolytic cleanup. And foreign bodies left in the abdomen provoke their own immune reactions. Even something as seemingly harmless as the starch powder used on surgical gloves can trigger granulomatous inflammation, adhesion formation, and in some cases bowel obstruction.

6PubMed Central. Granulomatous peritonitis caused by glove starch

This is why many surgeons now use starch-free gloves and irrigate the surgical field thoroughly before closing. These are small steps, but they address a documented source of adhesion-provoking inflammation.

Barrier Products That Separate Healing Surfaces

The most commercially developed category of adhesion prevention involves physical barriers placed between tissues during surgery. The idea is simple: if two raw surfaces cannot touch each other during the critical first few days of healing, they cannot form fibrin bridges, and the window for adhesion formation closes. These barriers come in several forms.

Bioresorbable Membranes

The best-studied solid barriers are thin films made from materials like hyaluronic acid and carboxymethylcellulose. These membranes are laid directly over the surgical site before the abdomen is closed. They dissolve on their own over about a week, which is long enough to cover the high-risk period for fibrin deposition. A systematic review of adhesion prevention agents found that bioresorbable membranes significantly reduce both the frequency and severity of adhesions, particularly in high-risk surgeries.

7PubMed Central. Long-Term Efficacy and Safety of Adhesion Prevention Agents in Abdominal and Pelvic Surgeries: A Systematic Review

Another well-studied barrier, Interceed, is an oxidized regenerated cellulose fabric. In a multicenter trial, adhesions reformed on about three-quarters of untreated pelvic sidewalls compared with roughly 40% of sidewalls where Interceed was applied. That reduction held up even in patients with severe endometriosis, a population especially prone to adhesion formation.

8PubMed. Use of Interceed(TC7) absorbable adhesion barrier to reduce postoperative adhesion reformation in infertility and endometriosis surgery

A separate study confirmed that Interceed reduced adhesion reformation beyond what careful microsurgical technique alone achieved.

9PubMed. The value of an absorbable adhesion barrier, Interceed, in the prevention of adhesion reformation following microsurgical adhesiolysis

Liquid and Gel Solutions

Liquid barriers work differently. Solutions like icodextrin (a glucose polymer fluid) are instilled into the abdominal cavity before closing, where they stay for days and keep organ surfaces physically separated as they float in the solution. The same systematic review that endorsed membranes also found icodextrin effective at reducing adhesion incidence.

7PubMed Central. Long-Term Efficacy and Safety of Adhesion Prevention Agents in Abdominal and Pelvic Surgeries: A Systematic Review

A practical advantage of liquid barriers is that they coat the entire abdominal cavity, not just the spot where the surgeon places them. This matters because adhesions do not always form at the primary surgical site. They can develop anywhere the peritoneum has been disturbed, including at trocar entry points during laparoscopic surgery. The limitation is that liquids are absorbed within days, and their effect on long-term outcomes like bowel obstruction, while promising, still has limited evidence backing it up.

10SpringerLink / Tech Coloproctol. Prevention of adhesive small bowel obstruction by anti-adhesion barriers: do they really work?

The honest picture on barriers is that they reliably reduce adhesion formation as measured during follow-up surgery, but the evidence that they prevent the downstream clinical problems patients actually worry about, like bowel obstruction, chronic pain, or infertility, is thinner and still accumulating.

Medications Under Investigation

Researchers have explored drugs that target different points in the adhesion-forming cascade: boosting the body’s clot-dissolving activity, dampening inflammation, or blocking new blood vessel growth in adhesion tissue. Several categories of pharmacological agents have been studied, including anti-inflammatory drugs, anticoagulants, and fibrinolytic agents.

11PubMed Central. Pathophysiology and prevention of postoperative peritoneal adhesions

Among the more intriguing findings, animal studies showed that COX-2 inhibitors like celecoxib significantly reduced adhesion formation, likely by suppressing new blood vessel growth in the developing scar tissue.

12Annals of Surgery. Prevention of Intra-abdominal Adhesions Using the Antiangiogenic COX-2 Inhibitor Celecoxib

The direct approach of flooding the surgical site with clot-dissolving agents like tissue plasminogen activator (tPA) has been tried in animal models as well. While it did reduce adhesions in rabbits, the doses needed to work also increased the risk of postoperative bleeding and delayed wound healing, making this approach impractical for human use in its current form.

13World Journal of Surgery and Surgical Research. Postoperative Abdominal Adhesions: Pathogenesis and Current Preventive Techniques

The fundamental challenge with drug-based approaches is that the processes driving adhesion formation, inflammation, clotting, and tissue repair, are the same processes the body needs to heal the surgical wound. Interfere too aggressively and you trade adhesion prevention for bleeding, infection, or poor wound healing. This narrow therapeutic window has kept most pharmacological agents in the preclinical or early trial stages, and as of now, no drug is approved specifically for adhesion prevention in humans. Clinically available prevention remains limited to barrier technologies and surgical technique.

14PubMed Central. Regenerative Medicine Therapies for Prevention of Abdominal Adhesions: A Scoping Review

What Is Actually at Stake

It is worth understanding why surgeons and patients should care so much about a problem that sounds abstract. Adhesions are the leading cause of small bowel obstruction, a condition where scar bands kink or compress a loop of intestine, blocking food and fluid from passing through.

15PubMed Central. Adhesive small bowel adhesions obstruction: Evolutions in diagnosis, management and prevention

Adhesive small bowel obstruction can range from a painful nuisance that resolves with fasting and IV fluids to a surgical emergency requiring reoperation, which itself creates fresh adhesions and restarts the cycle. The problem carries a real socioeconomic weight. Hospitalization for adhesion-related surgery creates a substantial cost burden on the healthcare system, and a systematic review of the financial impact of adhesion-related small bowel obstruction emphasized the need for better prevention and more efficient management to reduce these costs.

16PubMed Central. The inpatient burden of abdominal and gynecological adhesiolysis in the US17PubMed. Financial and Inpatient Burden of Adhesion-Related Small Bowel Obstruction: A Systematic Review of the Literature

For women, the stakes extend beyond obstruction. Adhesions that form after gynecologic surgery can distort the fallopian tubes or ovaries, contributing to infertility. Postoperative adhesions develop after more than 90% of gynecologic surgeries and rank among the main reasons for infertility in that population.

18PubMed Central. An Overview of Postoperative Intraabdominal Adhesions and Their Role on Female Infertility: A Narrative Review

Adhesions also cause chronic pelvic and abdominal pain that can persist for years and prove difficult to treat, since operating to remove them risks creating new ones.

Predicting Adhesions Before Reoperation

If you are facing a second abdominal surgery, one practical concern is whether adhesions from the first procedure will complicate things. Knowing where adhesions are before the surgeon makes the first cut can guide trocar placement in laparoscopic surgery and help avoid accidentally injuring bowel that is stuck to the abdominal wall.

Ultrasound-based visceral slide testing has emerged as a useful preoperative tool. The idea is simple: the sonographer watches on ultrasound while the patient breathes deeply or while gentle pressure is applied. Normally, the bowel slides freely beneath the abdominal wall. Where adhesions have tethered it, the sliding stops. A meta-analysis of this technique found that it has a very high negative predictive value for periumbilical adhesions, meaning that when the slide test shows normal movement, you can be quite confident no adhesions are there. The combined sensitivity was about 96%, with specificity around 93%.

19PubMed. Ultrasound Visceral Slide Assessment to Evaluate for Intra-abdominal Adhesions in Patients Undergoing Abdominal Surgery – A Systematic Review and Meta-analysis

More recent work has refined these ultrasound-based approaches, combining multiple signs including the sliding sign, traction sign, and peritoneal layer appearance into a predictive model that can estimate not just whether adhesions are present but how severe they are.

20PubMed Central. The value of ultrasound in the diagnosis and prediction of the severity of abdominal adhesions

A prospective observational study also validated a simpler clinical version of the slide test, confirming that it can detect intra-abdominal adhesions noninvasively and help counsel patients before elective surgery.

21PubMed. Evaluation of the Preoperative Slide Test in the Prediction of Intra-Abdominal Adhesions: A Single-Center, Double-Blinded, Prospective Observational Study

If you are scheduled for a reoperation, it is worth asking your surgeon whether a preoperative slide test has been considered. It is noninvasive, well tolerated, and can meaningfully change surgical planning.

Why Some People Form More Adhesions Than Others

Surgeons have long noticed that some patients develop dense, widespread adhesions after a straightforward procedure, while others form almost none after complex operations. This variability hints at an underlying genetic component, and a growing body of research supports that suspicion.

A review of the genetic literature identified several gene variants associated with increased adhesion formation. These include variations in genes controlling transforming growth factor beta, vascular endothelial growth factor, interferon-gamma, matrix metalloproteinases, plasminogen activator inhibitor-1, and several interleukins.

22PubMed Central. Is There a Genetic Predisposition to Postoperative Adhesion Development?

Many of these genes regulate the very processes at the center of adhesion biology: inflammation, clot breakdown, blood vessel formation, and tissue remodeling. A person whose genetic makeup tips any of these processes toward overactivity or underactivity could end up with more persistent fibrin bridges and, ultimately, denser adhesions.

This line of research is still early. There is no genetic test you can take before surgery to know your personal adhesion risk, and no gene therapy that modifies it. But it does explain why two patients who undergo the same operation by the same surgeon can have very different outcomes, and it suggests that future prevention strategies may need to be tailored to individual biology rather than applied as one-size-fits-all protocols.

What Patients Can Realistically Do

Most adhesion prevention happens in the operating room, which means the surgeon’s decisions carry the most weight. But patients are not entirely passive in this process. If your surgery is elective and a laparoscopic approach is feasible, asking about it specifically is reasonable. The evidence that laparoscopy reduces adhesion-related readmissions is strong.

3PubMed. Adhesion-related readmissions after open and laparoscopic surgery: a retrospective cohort study (SCAR update)

You can also ask whether your surgeon plans to use an adhesion barrier. Not every procedure warrants one, and in some cases the added cost or specific surgical circumstances make barriers impractical. But for operations known to carry high adhesion risk, such as gynecologic surgery, colorectal procedures, or any reoperation through a previous surgical field, the conversation is worth having.

Beyond the operating room, the factors that influence adhesion formation become harder to control. Surgery itself, radiation therapy, and inflammatory conditions like Crohn’s disease or endometriosis are all recognized contributors to adhesion formation.

23PubMed Central. Abdominal adhesions: A practical review of an often overlooked entity

Managing underlying inflammatory conditions effectively before and after surgery, following wound care instructions, and flagging any signs of postoperative infection early may indirectly reduce your adhesion risk by keeping the inflammatory cascade from running longer than necessary. None of this guarantees an adhesion-free recovery, but it stacks the odds in your favor as much as the current state of medicine allows.