Wound clips are small metal fasteners, usually made of stainless steel or titanium, used to close surgical incisions and lacerations by pressing the skin edges together. They function much like tiny staples and are, in fact, often called surgical staples or skin staples interchangeably. Their main selling point is speed: in head and neck surgery, for example, clips closed incisions roughly ten times faster than conventional sutures, and the trade-offs in healing, infection risk, and scarring are closer to a wash than most people expect.
How Wound Clips Close a Wound
A wound clip is a small, roughly rectangular piece of wire bent into an open “M” or “U” shape. It sits inside a disposable or reusable applicator that looks like a thick stapler. When the surgeon or clinician squeezes the handle, the device pushes a single clip through the upper layers of skin on both sides of the wound edge. The clip’s legs curl inward as they exit the applicator, pinching the skin edges together and holding them in alignment while the tissue heals underneath. Because the clip sits on the surface and only penetrates the outermost skin layers, it does not interact with deeper tissue the way a buried suture does.
Some newer devices go beyond simple mechanical pinching. Force-modulating tissue bridges, for instance, use a flexible backbone with struts that rotate along dual arcs as the device is applied, pulling wound edges together while distributing lateral skin tension more evenly than a standard staple can manage.
The Speed Advantage
The most consistent finding across decades of research is that clips save time. In a trial comparing closure methods after head and neck cancer surgery, the average time to close with staples was about 3 minutes compared to about 34 minutes with conventional sutures.1PubMed Central. Comparison of Skin Staples and Standard Sutures for Closing Incisions After Head and Neck Cancer Surgery: A Double-Blind, Randomized and Prospective Study That ten-fold difference is dramatic, but even in settings where the gap is narrower, clips consistently come out ahead on closure time. A meta-analysis of skin closure after hip replacement surgery found that suturing required longer operating time than stapling.2PubMed Central. Staples versus sutures for skin closure in hip arthroplasty: a meta-analysis and systematic review A separate systematic review covering orthopedic surgery more broadly reached the same conclusion: closure time was the one outcome where staples clearly beat sutures, with no significant difference in other secondary outcomes.3BMJ Open. Comparing sutures versus staples for skin closure after orthopaedic surgery: systematic review and meta-analysis
That time savings matters in the operating room because every extra minute under anesthesia carries its own set of risks. For emergency departments dealing with lacerations, faster closure also means shorter patient visits and more throughput. In vascular surgery, clips reduced arterial repair time from roughly seven minutes to under one minute per vessel, with no measurable difference in the quality of the repaired vessel wall afterward.4PubMed Central. Arterial and venous repair with vascular clips: comparison with suture closure
Do Clips Cause More Infections?
This is where the evidence gets muddy, and where a lot of surgeons have strong opinions that go beyond what the data cleanly support. A meta-analysis focused on orthopedic surgery found that patients randomized to staples had about twice the risk of surgical site infection compared to those who received sutures. But the finding was fragile. Most infections were superficial, and when the researchers excluded one influential trial with a high risk of bias, the difference nearly vanished. When they looked only at well-designed low-bias trials, there was no significant difference between the two closure methods.5PubMed Central. Is the Risk of Infection Lower with Sutures than with Staples for Skin Closure After Orthopaedic Surgery? A Meta-analysis of Randomized Trials
A broader systematic review covering 34 studies and nearly 10,000 patients across multiple surgical specialties came to a similarly ambiguous conclusion. Sutures had a slightly lower overall infection rate (about 5%) compared to staples (about 7%), but the difference was not statistically meaningful, and there was substantial variation between individual studies.6PubMed Central. Surgical wound closure by staples or sutures? Systematic review The honest summary: there may be a small infection disadvantage to staples in some settings, particularly in orthopedic wounds, but the signal is weak enough that study quality and individual surgical technique may matter more than the closure method itself.
Cosmetic Results and Scarring
People tend to assume that staples leave worse scars than sutures, and in some situations that intuition holds up. But the picture depends heavily on what kind of suture you are comparing against and where on the body the wound is. A randomized trial of women undergoing emergency cesarean section found that staples actually produced better cosmetic results than subcuticular sutures, as rated by both patients and clinicians on standardized scar scales, with comparable post-operative pain and wound complication rates.7PubMed. A randomized controlled trial comparing cosmetic outcome after skin closure with ‘staples’ or ‘subcuticular sutures’ in emergency cesarean section
In emergency department lacerations, staples have also shown comparable cosmetic outcomes to sutures without compromising wound healing.8Annals of Emergency Medicine. Evaluation of skin stapling for wound closure in the emergency department The general pattern across the literature is that cosmetic outcomes are roughly equivalent for most wound types when clips are placed properly. Where sutures have a genuine cosmetic edge is on the face and in areas where fine control over wound edge alignment matters. Clips are blunter instruments. They approximate skin edges well enough for the scalp, trunk, and extremities, but a surgeon closing a wound on a patient’s cheek will still reach for sutures or tissue adhesive.
What Clip Removal Feels Like
Clip removal is a common source of anxiety, and the experience is genuinely different from having sutures taken out. A specialized clip remover slides under each staple and bends it open so the legs release from the skin. It is quick per clip, but the sensation is a brief pinch or tug that most people describe as uncomfortable rather than painful.
The research on removal pain is mixed. In a trial of patients who had thyroid or parathyroid surgery, removing clips caused significantly more pain than pulling out subcuticular sutures. Suture removal was also faster.9PubMed Central. Randomised trial of subcuticular suture versus metal clips for wound closure after thyroid and parathyroid surgery On the other hand, a trial in patients who had hernia repair found that a significant majority actually preferred clips, likely because the clips themselves caused less pain on removal than the sutures they were compared against.10International Journal of Clinical Practice. Clips or sutures for herniorrhaphy wounds? The discrepancy probably comes down to the type of suture being compared. Subcuticular sutures, which run under the skin surface and get pulled out like a thread through fabric, tend to come out more gently than interrupted sutures that pierce through the outer skin at each stitch point. Clips come out roughly the same way regardless, so they can feel worse or better depending on what they are being compared against.
Wound Separation After Cesarean Section
One area where wound clips carry a real and specific downside is cesarean section closure. A systematic review of randomized trials found that clips were associated with more than double the rate of wound separation compared to sutures, along with longer hospital stays. Closure time was shorter with clips, as expected, but the higher wound separation rate is clinically meaningful for a population that needs to care for a newborn while recovering.11PubMed Central / Springer Nature. Sutures versus clips for skin closure following caesarean section: a systematic review, meta-analysis and trial sequential analysis of randomised controlled trials This is one context where many obstetric guidelines now favor subcuticular sutures over staples for routine cesarean closures. The abdominal skin over the lower uterine incision is under tension as the patient moves, bends, and lifts, and clips may not distribute that tension as evenly as a running suture does.
Cost and Emergency Department Use
Wound clips tend to be cheaper overall, mainly because faster closure means less clinician time. A cost analysis comparing stapling and suturing in an emergency department found that the average total cost per case was roughly $8 to $18 for staple closure compared to about $22 for sutures, with the savings growing as laceration length increased.12PubMed. Cost analysis of stapling versus suturing for skin closure In pediatric scalp lacerations, staple repair was similarly less expensive in both equipment cost and total cost when physician time was factored in.13The Journal of Pediatrics. Comparison of skin stapling devices and standard sutures for pediatric scalp lacerations: A randomized study of cost and time benefits
Emergency departments are one of the settings where clips shine most clearly. Lacerations that come through the door need fast, reliable closure, and the skill floor for stapling is lower than for suturing. A clinician can be taught to apply skin staples effectively in far less time than it takes to develop good suturing technique. For straightforward scalp wounds, which bleed profusely and benefit from rapid closure, staples are often the default choice. One early evaluation of stapling in the emergency department concluded that it was an efficient and cost-effective alternative for selected lacerations without compromising healing or cosmetic results.14Annals of Emergency Medicine. Evaluation of skin stapling for wound closure in the emergency department
Metal Clips and Imaging Artifacts
If you have metal wound clips left inside your body after surgery, they can interfere with CT scans and MRI. On CT, metallic clips produce streak artifacts that radiate outward from the clip site, obscuring surrounding anatomy. These streaks stem primarily from motion of the clip during the scan and from the way the metal distorts the X-ray signal as the scanner rotates around it.15PubMed. An algorithm for the reduction of metal clip artifacts in CT reconstructions The severity depends on the clip’s orientation relative to the scanner. When the clip’s long axis is aligned with the scan plane, artifacts tend to be confined along that axis, and image quality on the sides of the clip remains good. But at certain angles, strong artifacts spread laterally and can degrade the diagnostic usefulness of the images.16PubMed. Evaluation of clip artefacts in three-dimensional computed tomography
This is mainly a concern with internal clips, such as those used to ligate blood vessels or mark tissue during cancer surgery, rather than skin staples that get removed within a week or two. But for patients who retain permanent internal clips and need follow-up imaging, the artifact issue is real enough that radiologists have developed algorithms to compensate and surgeons sometimes consider clip material and placement angle with future imaging in mind.
Biodegradable Clips on the Horizon
The most intriguing development in wound clip technology is the push toward biodegradable materials that would eliminate the need for removal entirely. Several research teams are working on clips made from metals or polymers that the body can safely absorb over weeks to months.
Magnesium alloy clips have been tested in animal surgery and show promise. In a canine study, a magnesium alloy clip produced far fewer imaging artifacts than a titanium clip and was almost completely absorbed by six months after surgery, with no postoperative complications and no dangerous elevation of magnesium, calcium, or zinc levels in the blood.17ScienceDirect / Surgery. Development of a new biodegradable operative clip made of a magnesium alloy: Evaluation of its safety and tolerability for canine cholecystectomy Zinc alloys are another candidate. Lab testing of zinc alloy staples found corrosion rates slow enough that the clips would maintain structural integrity throughout the wound healing period before gradually degrading.18PubMed Central. Novel zinc alloys for biodegradable surgical staples
Researchers have also developed cellulose-based bioabsorbable staples that can be coated with antibiotics. These staples showed strong biodegradation in wound environments while maintaining enough puncture strength to hold wound edges together mechanically during healing.19PubMed. Cellulose-based bioabsorbable and antibiotic coated surgical staple with bioinspired design for efficient wound closure A clip that closes the wound, fights local infection, and then dissolves on its own is an appealing concept, though none of these materials have reached routine clinical use yet.
Smart Dressings and Sutureless Alternatives
Beyond biodegradable clips, some researchers are skipping mechanical closure altogether. A multifunctional self-healing wound dressing has been developed that closes wounds without sutures or staples while simultaneously monitoring healing in real time. Sensors embedded in the dressing can track temperature, pH, and glucose levels at the wound site, giving clinicians early warning signs of infection or poor healing.20PubMed. Highly Efficient Self-Healing Multifunctional Dressing with Antibacterial Activity for Sutureless Wound Closure and Infected Wound Monitoring This is still laboratory-stage technology, but it represents the direction the field is moving: wound closure devices that do more than just hold skin together.
Wound Clips in Veterinary Surgery
Wound clips are not limited to human medicine. In veterinary surgery, the same speed and simplicity advantages apply, and keeping anesthesia time short is arguably even more important for animal patients. A study of surgical staples versus nylon sutures for closing mastectomy wounds in dogs found that staple closure was almost ten times faster. Dogs in the staple group also had fewer wound complications, including less inflammatory discharge, and lower wound temperatures on thermographic imaging, suggesting less post-surgical inflammation overall.21PubMed Central. Efficacy and outcomes of surgical staples as an alternative to conventional skin closure in canine mastectomy
The slightly higher material cost of staples compared to basic nylon sutures was offset in the study by the reduced operating time and fewer complications, making the technique a favorable choice for oncologic patients who may have additional health concerns or cannot tolerate prolonged anesthesia. Veterinarians working in high-volume spay and neuter clinics have similarly adopted staples for routine skin closure because they allow faster turnover between patients without a meaningful difference in healing.