Breaking up adhesions depends entirely on where they are and what problems they cause. Abdominal adhesions from prior surgery are typically addressed through a procedure called adhesiolysis, which can be done either through open surgery or laparoscopically. Joint and tendon adhesions often respond to physical therapy, manipulation under anesthesia, or targeted surgery. Spinal adhesions from failed back surgery can be treated with catheter-based epidural procedures. The catch with all of these approaches is that the very act of breaking up adhesions can trigger new ones to form, which is why prevention strategies and barrier materials have become just as important as the treatment itself.
Why Adhesions Form in the First Place
Adhesions are bands of scar-like tissue that connect surfaces that are not supposed to be connected. In the abdomen, they develop when the thin membrane lining the abdominal cavity (the peritoneum) is irritated by surgical trauma or infection. Normally, the body deposits fibrin at the injury site and then breaks it down in an orderly fashion. When that balance tips toward too much fibrin and not enough breakdown, the fibrin hardens into permanent connective tissue that tethers organs, loops of bowel, or the abdominal wall to each other.1Asian Journal of Surgery. Current options for the prevention of postoperative intra-abdominal adhesions Even foreign material introduced during surgery can set this process in motion. Cornstarch powder on surgical gloves, for example, was shown in animal studies to significantly increase adhesion formation, which eventually led to widespread adoption of powder-free gloves.2PubMed. Surgical glove powder and intraperitoneal adhesion formation
Outside the abdomen, adhesions form by similar logic but in different tissues. After tendon repair, scar tissue can glue the repaired tendon to its surrounding sheath, limiting finger movement. In the shoulder, the joint capsule can become inflamed and scarred (frozen shoulder). After spinal surgery, epidural scar tissue can press on nerve roots. Each of these requires a different treatment approach, though they share the same fundamental problem: scar tissue binding things together that need to move freely.
Surgical Adhesiolysis for Abdominal Adhesions
When abdominal adhesions cause bowel obstruction, chronic pain, or infertility, surgery to physically cut or peel apart the adhesion bands remains the primary treatment. The two main approaches are open surgery, where a larger incision gives the surgeon direct access, and laparoscopic surgery, where the work is done through small incisions using a camera and instruments.
The evidence comparing these two approaches has been accumulating for years. A systematic review and meta-analysis of patients with adhesive small bowel obstruction found that laparoscopic adhesiolysis was linked to lower overall complication rates, less prolonged ileus, and fewer pulmonary complications compared with the open approach.3PubMed. Laparoscopic versus open adhesiolysis in patients with adhesive small bowel obstruction: a systematic review and meta-analysis A later meta-analysis that included sensitivity analyses echoed this, finding that the laparoscopic approach was associated with shorter hospital stays, shorter operative times, and fewer severe complications.4PubMed. Laparoscopic versus open approach for adhesive small bowel obstruction, a systematic review and meta-analysis of short term outcomes
The picture changes, however, when you look at long-term outcomes. A randomized clinical trial (the LASSO trial) followed patients for five years after laparoscopic or open adhesiolysis. Recurrence of small bowel obstruction was similar between groups, as were incisional hernia rates and quality-of-life scores.5JAMA Surgery. Long-Term Outcomes After Laparoscopic vs Open Adhesiolysis for Small Bowel Obstruction: The LASSO Randomized Clinical Trial In other words, the laparoscopic approach seems to offer a smoother short-term recovery without changing the odds of problems returning years later. This matters because patients often want to know not just which surgery is easier to bounce back from, but whether it will keep them out of trouble down the road.
When Is Surgery the Right Call for Bowel Obstruction
Not every case of adhesive small bowel obstruction needs an operation. Many episodes resolve with what doctors call conservative management: placing a tube through the nose to decompress the bowel, giving intravenous fluids, and waiting for the obstruction to pass on its own. The decision between operating and waiting involves a genuine trade-off.
A systematic review and meta-analysis comparing operative and non-operative management found that surgery roughly halved the risk of future recurrence. But it came with higher complication rates and, in some analyses, a higher short-term mortality risk.6PubMed. Operative versus non-operative management of adhesive small bowel obstruction: A systematic review and meta-analysis A more recent meta-analysis across multiple study designs confirmed the pattern: operative treatment consistently reduced recurrence rates, but complications and costs were higher in the surgical group.7PubMed. Clinical Outcomes of Non-Operative Versus Operative Treatment in Adhesive Small Bowel Obstruction: A Systematic Review and Meta-Analysis
A prospective study looking at one-year outcomes put some concrete numbers on this. Patients who underwent surgery had a recurrence-free survival rate of about 93%, versus roughly 67% for those managed without surgery. Yet the non-operative group spent less total time in the hospital over that year.8BJS Open. One-year outcomes following operative or non-operative management of adhesional small bowel obstruction The bottom line is that surgery offers better protection against the obstruction coming back, but it costs more in terms of immediate risk and recovery time. When there is suspicion of strangulation (where blood supply to the bowel is being cut off), surgery becomes urgent regardless of these statistics.
Preventing Adhesions from Reforming After Surgery
Here is the paradox of adhesiolysis: the surgery itself creates the very conditions that cause adhesions. A new incision, tissue handling, and inflammation all promote fresh adhesion formation. This has driven decades of research into barrier materials that can be placed between tissue surfaces during surgery to keep them separated while healing occurs.
A systematic review of barrier materials identified ten products that successfully reduced adhesion incidence in animal studies and then showed positive results in human trials. An additional 48 materials had promising animal data but no human studies yet.9PubMed Central. Barrier materials for prevention of surgical adhesions: systematic review Among the best-studied products, Seprafilm (a hyaluronic acid and carboxymethylcellulose film) has consistently performed well. In a head-to-head animal study comparing five barrier materials, Seprafilm and an expanded polytetrafluoroethylene membrane (PRECLUDE) were the only two that significantly reduced adhesions when each treated side was compared with its untreated control side.10Human Reproduction. Effects of five different barrier materials on postsurgical adhesion formation in the rat
The field is moving toward sprayable barriers that can coat irregular surfaces more easily than flat sheets. A newer sprayable hydrogel called AeroVeil eliminated primary adhesions in a rat model entirely and significantly reduced adhesion scores in rabbits.11PubMed Central. Evaluation of a Sprayable Hydrogel for Surgical Adhesion Prevention in Rat and Rabbit Models Another spray-type barrier combined physical protection with immune modulation, scavenging the peritoneal macrophages that contribute to adhesion formation.12Nature Communications. Sprayable anti-adhesive hydrogel for peritoneal macrophage scavenging in post-surgical applications An injectable, shear-thinning hydrogel has also shown superior performance to commercially available barriers in rodent models, with the added advantage of being deliverable through spray or injection to reach complex anatomies.13Nano-Micro Letters. Nanoengineered Shear-Thinning Hydrogel Barrier for Preventing Postoperative Abdominal Adhesions Most of these newer materials remain in preclinical stages, but the direction is clear: future barriers will likely be sprayed or injected rather than laid down as sheets.
Pelvic Adhesions and Chronic Pain
Adhesions in the pelvis deserve their own discussion because the evidence there has been contested for years. Pelvic adhesions from endometriosis, prior cesarean sections, or infections can cause chronic pain and infertility, but the relationship between adhesions and pain is not straightforward. Some patients have dense adhesions and no pain; others have mild adhesions and severe symptoms.
A randomized study of women with chronic pelvic pain and adhesions found that those who had adhesiolysis showed significant improvement at six months compared with controls. Pain scores dropped meaningfully, and both physical and emotional quality-of-life measures improved.14PubMed Central. Should women with chronic pelvic pain have adhesiolysis? That said, the risks of adhesiolysis in the pelvis are real. Bowel perforation, ureteral or bladder injury, and vascular injury are all recognized complications, and patients who have already had multiple surgeries face the highest risk.15PubMed. How to Break Up Adhesions: Methods and Treatments The decision to operate on pelvic adhesions for pain is typically made only after other causes of chronic pelvic pain have been ruled out and conservative treatments have failed.
Tendon Adhesions After Hand Surgery
When a flexor tendon in the hand is repaired, scar tissue frequently forms between the tendon and the sheath it glides through. This can severely limit finger bending and grip strength. If physical therapy alone does not restore adequate motion, a procedure called tenolysis is performed to free the tendon from surrounding scar.
A retrospective review of tenolysis following flexor tendon repair in the hand found that total active motion improved from about 147 degrees to 184 degrees at 12 weeks, and half of the digits achieved excellent or good functional outcomes. Tendon rupture, the most feared complication, occurred in about 3% of cases.16Journal of Hand Surgery Global Online. Clinical Outcomes of Flexor Tenolysis Following Zone 2-3 Flexor Tendon Repair: A Retrospective Review Reoperation was the most common complication overall. Timing matters with tenolysis: surgeons generally wait several months after the initial repair to give the tendon time to heal securely before attempting to free it from adhesions, since operating too early risks rupturing the repair.
On the pharmacological side, anti-inflammatory drugs have shown some effect on tendon adhesion formation. In animal models, ibuprofen appeared to reduce adhesion formation more effectively than selective COX-2 inhibitors, likely because it blocks a broader range of inflammatory pathways.17PubMed. Effects of nonsteroidal anti-inflammatory drugs on flexor tendon adhesion Whether this translates into clinical practice for patients recovering from tendon repair remains an open question, but it hints at a role for common painkillers in managing the adhesion problem early.
Spinal Epidural Adhesiolysis
After spinal surgery, scar tissue can form around nerve roots in the epidural space, sometimes causing persistent pain even though the original surgical problem was corrected. This is one component of what is called failed back surgery syndrome. Epidural adhesiolysis is a minimally invasive procedure where a catheter is threaded into the epidural space, and a combination of solutions is used to break down scar tissue, followed by injection of medications like steroids and local anesthetics.
Studies of this approach have shown promising results. One study comparing one-day and three-day adhesiolysis protocols found significant pain relief and functional improvement in both groups, with treatment deemed successful in about 77% and 83% of patients respectively.18PubMed Central. The Results of Treating Failed Back Surgery Syndrome by Adhesiolysis: Comparing the One- and Three-Day Protocols An earlier study documented pain scores dropping from an average of about 8.6 out of 10 before the procedure to 3.1 at three days after.19Korean Journal of Anesthesiology. Clinical Experience of Epidural Adhesiolysis in Patients with Failed Back Surgery Syndrome However, the durability of these results varies. The same study noted that scores had partially crept back up to about 5.7 by two months. This suggests the procedure may need to be repeated, or it may work best as part of a broader pain management strategy rather than a standalone cure.
Physical Therapy, Manual Techniques, and Frozen Shoulder
For musculoskeletal adhesions, physical therapy is often the first line of treatment. In frozen shoulder (adhesive capsulitis), where the joint capsule becomes thickened and scarred, a systematic review found that therapeutic exercises and joint mobilization are strongly recommended for reducing pain and improving range of motion, particularly in the later stages of the condition.20PubMed. The effectiveness of physiotherapeutic interventions in treatment of frozen shoulder/adhesive capsulitis: a systematic review For many patients, consistent stretching and mobilization over months is enough to regain most function, though the timeline can be frustratingly slow.
Instrument-assisted soft tissue mobilization (IASTM), where a therapist uses shaped metal or plastic tools to scrape and mobilize scar tissue and fascial adhesions, has become popular in physical therapy and sports medicine clinics. The evidence, though, has not kept up with the enthusiasm. A systematic review of IASTM found that results were statistically insignificant, with patients in treatment groups showing outcomes similar to controls.21PubMed Central. The efficacy of instrument assisted soft tissue mobilization: a systematic review The reviewers noted substantial methodological variability among studies, which makes it hard to draw a firm conclusion. IASTM may still have value for individual patients, but anyone paying a premium for it should know the published evidence is thin.
Shock Wave Therapy
Extracorporeal shock wave therapy (ESWT) is better known for treating kidney stones and plantar fasciitis, but research has been exploring its potential for adhesion-related problems. The idea is that focused or unfocused pressure waves can break down scar tissue, stimulate blood flow, and promote tissue remodeling without surgery.
In a rat model of knee contracture caused by immobilization, shock wave therapy significantly improved range of motion and reduced collagen fiber buildup in the joint compared to immobilized controls.22PubMed Central. Extracorporeal Shock Wave Therapy Improves Nontraumatic Knee Contracture in a Rat Model A rabbit study suggested that ESWT could prevent arthrofibrosis (excess scar tissue in a joint) during the healing process after knee injury.23PubMed. Prevention of arthrofibrosis during knee repair by extracorporeal shock wave therapy: Preliminary study in rabbits In humans, a study on retracting scars of the hands found that unfocused shock wave treatment (alone or combined with manual therapy) produced significant improvements in scar appearance, pain, and range of movement, with histological analysis showing increases in fibroblast activity and new blood vessel formation.24PubMed. Extracorporeal Shock Wave Therapy: An Emerging Treatment Modality for Retracting Scars of the Hands
ESWT for adhesions is still considered an emerging treatment. Most of the strongest data comes from animal models, and the human studies that do exist tend to be small. But the appeal is obvious: if pressure waves delivered through the skin can achieve even a fraction of what surgical adhesiolysis does, without the risk of creating new adhesions in the process, it could fill an important gap.
Anti-Inflammatory Drugs and Adhesion Prevention
Because inflammation drives adhesion formation, researchers have tested whether anti-inflammatory medications can slow or stop the process. In a mouse model, animals treated with COX-2 inhibitors (the same class of drug as celecoxib) developed significantly fewer abdominal adhesions than controls. Celecoxib produced the greatest reduction and also lowered the density of new blood vessels within the adhesion tissue, which may explain part of its effect.25PubMed Central. Prevention of Intra-abdominal Adhesions Using the Antiangiogenic COX-2 Inhibitor Celecoxib Aspirin, by contrast, did not significantly reduce adhesions in the same experiments.
Enzymes like serratiopeptidase, derived from bacteria, have also been explored for their fibrin-dissolving and anti-inflammatory properties.26PubMed Central. Serratiopeptidase: Insights into the therapeutic applications These proteolytic enzymes are marketed as supplements in some countries and are claimed to “eat away” scar tissue. The laboratory evidence for anti-inflammatory and fibrinolytic effects exists, but robust clinical trials demonstrating that oral enzyme supplements meaningfully break down established adhesions in humans are lacking. If you see them promoted online as an alternative to surgery for bowel adhesions, treat those claims with serious skepticism.
Risks of Adhesiolysis Surgery
Any discussion of breaking up adhesions needs to be honest about the risks. Adhesiolysis is not a minor add-on to a surgical procedure. A study of abdominal surgery patients found that about one in ten patients undergoing adhesiolysis suffered an inadvertent bowel injury during the process, compared with none among patients who did not require adhesiolysis. Those who had adhesiolysis also faced higher rates of sepsis, intra-abdominal complications, and wound infection, along with longer hospital stays and higher costs.27Annals of Surgery. Adhesiolysis-Related Morbidity in Abdominal Surgery When adhesiolysis was complicated by a bowel defect, the mortality rate jumped to 8%, compared with under 2% when it went smoothly.
Medico-legal data reinforces the seriousness of these risks. Successful legal claims have involved bowel perforation during laparoscopic adhesion division, delays in diagnosing adhesion-related bowel obstruction, and infertility resulting from adhesions.28PubMed. Medico-legal consequences of post-operative intra-abdominal adhesions None of this means adhesiolysis should be avoided when it is needed, but it underscores why surgeons approach it cautiously, especially in patients with multiple prior operations where adhesions are likely to be dense and the anatomy distorted.
Diagnosing Adhesions Before You Treat Them
One of the underappreciated challenges with adhesions is figuring out whether they are actually there. Adhesions do not show up on standard X-rays or CT scans. Two imaging techniques have shown the most promise: ultrasound using the “visceral slide” technique (where the examiner watches whether organs glide freely against the abdominal wall during breathing) and cine MRI (a type of MRI that captures motion over time).
The reported accuracy of these methods varies across studies. One study found that both ultrasound and cine MRI had sensitivity above 90% and specificity of 100% for detecting adhesions to the abdominal wall, with cine MRI being better at spotting adhesions between internal organs.29European Journal of Radiology. Assessment of the diagnostic efficacy of abdominal ultrasonography and cine magnetic resonance imaging in detecting abdominal adhesions However, an earlier study using the same visceral slide technique reported much lower sensitivity for both methods, around 22-24%, though specificity remained high.30PubMed. Detection of abdominal wall adhesions using visceral slide The discrepancy likely reflects differences in technique and patient selection, but it means that a negative imaging result does not rule out adhesions. In practice, many adhesions are still discovered only when a surgeon enters the abdomen for another reason.
Knowing where adhesions are before surgery is most useful when it helps the surgeon choose a safe entry point. If imaging shows the area beneath a planned incision site is free of adhesions, the risk of accidentally cutting into bowel during the initial access drops considerably. That practical benefit is why preoperative adhesion mapping, even with its limitations, has gained traction among surgeons planning repeat abdominal operations.
Electrospun Nanofiber Barriers and the Next Generation of Prevention
Looking further ahead, nanotechnology is entering the adhesion prevention space. Researchers have developed electrospun nanofiber membranes made from bioabsorbable polymers that can be loaded with drugs. In one early study, a membrane loaded with a small amount of the antibiotic cefoxitin completely prevented cecal adhesions in a rat model, with the amount of drug amounting to roughly a tenth of what a human would take systemically per day after surgery.31PubMed Central. Prevention of Postsurgery-Induced Abdominal Adhesions by Electrospun Bioabsorbable Nanofibrous Poly(lactide-co-glycolide)-Based Membranes The appeal of this approach is its dual function: the membrane acts as a physical barrier while simultaneously delivering medication directly to the wound site at doses far below what systemic treatment would require. These materials are still in preclinical development, but they represent where the field is heading, combining physical separation with targeted drug delivery in a single, dissolvable product.