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Selecting the best sutures for skin closure is one of the most practical decisions a veterinary professional makes during any surgical procedure. While suture selection may seem straightforward at first, the reality involves carefully weighing tissue characteristics, wound tension, healing timelines, and the individual needs of each patient. A poorly chosen suture material can lead to wound dehiscence, prolonged inflammation, or unnecessary discomfort for the animal. Getting this decision right, every time, is what separates competent surgical practice from truly excellent patient care.
This guide is designed to help veterinary professionals navigate the wide range of suture material types available for skin closure, understand the clinical reasoning behind each option, and make more informed choices in their day-to-day practice.
Skin is a unique tissue. It is constantly exposed to movement, environmental contaminants, and the animal’s own behavior. Unlike internal tissues, skin closures are visible and accessible, which means both complications and cosmetic outcomes are immediately apparent to the pet owner.
The skin also experiences tension from surrounding musculature, joint movement, and the natural elasticity of the dermis. This means sutures placed in the skin must perform reliably under physical stress, maintain sufficient tensile strength through the early healing stages, and ideally cause minimal tissue reaction. Understanding these demands is the foundation for choosing the right material.
For a broader overview of wound management, understanding veterinary surgical wound closure techniques for better recovery provides a solid starting point.
Before looking at specific materials, it helps to consider the clinical variables that shape every suture decision.
High-tension wounds require suture materials with strong tensile strength and good knot security. A closure placed over a joint or along the dorsal midline in a large breed dog will face significantly more mechanical stress than a small excision on the lateral trunk. In high-tension situations, non-absorbable monofilament sutures are generally preferred because they maintain their strength over time.
For external skin closures, the ability to remove the suture after healing is often preferable. Non-absorbable materials are placed with the intention of removal once adequate wound strength has been achieved, typically between 10 and 14 days post-operatively. In contrast, some practitioners opt for absorbable sutures placed subcuticularly, which dissolve without the need for a follow-up visit. This choice is particularly useful in fractious animals or in cases where client compliance with a return appointment may be uncertain.
Wounds with contamination risk, or those in areas with high bacterial load, benefit from monofilament suture materials. The single-strand construction of monofilament sutures resists bacterial wicking, unlike braided multifilament sutures which can harbor microorganisms within their interstices. For a detailed breakdown of these structural differences, the complete guide to monofilament suture vs multifilament for clinical use is a useful reference.
In areas where scarring is a concern, such as the face or limbs in companion animals, suture choice influences the cosmetic result. Fine-gauge monofilament sutures cause less tissue drag and produce cleaner wound edges. Absorbable subcuticular patterns, which avoid external skin penetrations, are often chosen when minimal visible scarring is a priority.
Some animals simply will not tolerate external sutures well. Dogs that lick, cats that scratch, and rabbits that pull at their incision sites can dismantle even the most technically sound closure. In these patients, subcuticular absorbable sutures combined with tissue adhesive can reduce the risk of patient-induced wound breakdown.
There are several types of sutures used in skin closure, each with distinct properties. Veterinary professionals typically select from the following categories.
These are among the most commonly used suture material types for external skin closure. They maintain tensile strength indefinitely, can be easily removed at the appropriate time, and cause minimal tissue reaction.
Nylon (Polyamide): Nylon is a synthetic monofilament widely used for skin closure across all species. It is smooth, strong, and largely inert in tissue. Its slight elasticity allows it to accommodate minor post-operative swelling without cutting into tissue. The main drawback is that nylon has some degree of memory, meaning it tends to return to its original shape, which requires additional knot throws to ensure security.
Polypropylene: Another synthetic monofilament, polypropylene is known for its very low tissue reactivity and excellent strength. It handles smoothly through tissue and is particularly suited for delicate or inflamed skin where minimizing additional irritation is important. Polypropylene is also used in cardiovascular and soft tissue procedures for similar reasons.
Both of these materials are appropriate for interrupted or continuous external skin patterns. They are removed once the wound has gained sufficient intrinsic strength, usually at the 10 to 14 day mark depending on the location and the patient.
Absorbable sutures are frequently used for subcuticular skin closure, where the suture is placed just beneath the epidermal layer and does not penetrate the skin surface. This technique eliminates the need for suture removal and reduces the likelihood of suture-related irritation.
Poliglecaprone 25 (Monocryl): This synthetic monofilament absorbable suture is one of the most popular choices for subcuticular skin closure. It handles well, passes smoothly through tissue, and causes minimal tissue reaction. Its tensile strength is maintained for approximately one to two weeks, which aligns with the early healing phase of skin. Complete absorption occurs within 90 to 120 days.
Polyglactin 910 (Vicryl): A braided multifilament absorbable suture, polyglactin 910 offers excellent knot security and is easier for many practitioners to handle than monofilaments. It is frequently used for subcutaneous layer closure before the skin is approximated. While it can be used for intradermal patterns, its braided structure means it generates slightly more tissue drag than monofilament alternatives.
Polydioxanone (PDS): This long-acting synthetic monofilament absorbable suture retains tensile strength for four to six weeks, making it suitable for wounds that are expected to heal slowly or require prolonged support. It is less commonly used for routine skin closure but is valuable in orthopedic or reconstructive cases where the surrounding tissues are under greater mechanical demand.
For more detail on how these materials behave over time, how long does absorbable sutures last in veterinary procedures provides a thorough breakdown of absorption timelines.
Chromic catgut is a natural absorbable suture occasionally used for skin closure in specific situations. It is derived from purified collagen and treated with chromic salts to extend its tensile strength retention. While it handles well and offers acceptable knot security, chromic catgut tends to elicit a greater tissue reaction than synthetic alternatives, and its absorption profile is less predictable. For these reasons, most modern veterinary practices prefer synthetic absorbable sutures for skin closure unless specific circumstances favor a natural material.
For a deeper look at the role of this material in veterinary surgery, exploring chromic catgut suture uses in animal soft tissue repair outlines its properties and appropriate applications.
The suture material selected must be paired with an appropriate suture pattern. The most commonly used patterns for external skin closure in veterinary medicine include the following.
Each suture is placed and tied individually. This is the most widely used pattern for skin closure because it distributes tension evenly, and the failure of one suture does not compromise the entire closure. It is technically straightforward and can be applied to almost any wound configuration.
A single suture strand is run continuously along the wound length. This pattern is faster to place but carries the risk that if the strand breaks, the entire closure can unravel. It is typically reserved for clean, low-tension wounds.
A continuous suture placed in the subcuticular layer, parallel to the skin surface. This pattern produces excellent cosmetic results and eliminates external skin penetrations. It requires an absorbable suture material and is best suited for clean surgical incisions with minimal contamination risk.
These patterns are used when additional tension relief is required. Vertical mattress sutures evert wound edges and distribute tension more broadly across the tissue, reducing the likelihood of dehiscence in high-tension closures.
Sutures are not always the only tool used for skin closure. In many cases, they work best when combined with other methods.
Veterinary skin glue can be applied over a subcuticular suture line to seal the surface and provide additional protection against contamination. It is also used as a primary closure for small, superficial, low-tension lacerations. The key benefits of vet skin glue for faster healing in pets explain why this option is increasingly popular in veterinary practice.
For long incisions, particularly in orthopedic or emergency cases, disposable skin staplers offer rapid and reliable closure. They provide consistent wound edge eversion and are particularly useful when surgical time needs to be minimized. Reviewing how disposable skin stapler use supports faster healing for pets can help practitioners decide when staplers are the better choice over sutures.
Understanding how to choose the best sutures for skin closure becomes much clearer when applied to real clinical scenarios.
Routine spay or neuter: For the subcutaneous layer, a braided absorbable suture such as polyglactin 910 provides excellent knot security and adequate tensile strength. For the skin, a subcuticular pattern using poliglecaprone 25 eliminates the need for suture removal and causes minimal tissue reaction.
Traumatic laceration with contamination: A monofilament non-absorbable suture such as nylon or polypropylene is preferred for external closure in contaminated wounds. Its smooth surface resists bacterial wicking and allows for easy removal once the wound has healed sufficiently.
Long orthopedic incision: A skin stapler is often the fastest and most reliable option. Where sutures are preferred, a non-absorbable monofilament in an interrupted pattern provides dependable closure over a longer line of tissue.
Facial wound with cosmetic concern: Fine-gauge monofilament sutures, placed with precision in an interrupted pattern, offer clean wound edge apposition with minimal scarring. Alternatively, a subcuticular pattern with absorbable monofilament can produce excellent results.
Fractious or poorly compliant patient: Subcuticular absorbable sutures, possibly reinforced with tissue adhesive, reduce the risk of the animal interfering with the closure and eliminate the need for a potentially stressful return visit for suture removal.
For guidance on what happens after skin closure with staples specifically, practices to remove surgical staples from animal wounds is a helpful resource for both clinical teams and client education.
In addition to material type, suture gauge plays an important role in skin closure outcomes. Using the smallest suture size that will adequately support the wound reduces tissue trauma, minimizes scarring, and decreases the foreign body load in the tissue. As a general rule, larger animals require larger diameter sutures, while small animals, birds, and exotic species benefit from fine-gauge materials that cause less disruption to delicate tissues.
Common gauges for skin closure range from 2-0 to 4-0 in most small animals, with some applications in very small patients requiring 5-0 or finer.
Regardless of the material type chosen, the quality of the suture itself influences surgical outcomes. Sutures that are inconsistently coated, poorly packaged, or subject to improper storage can lose tensile strength prematurely or introduce contamination into the surgical field. Sourcing suture materials from reliable suppliers ensures that the products perform as expected, supporting consistent healing outcomes across patients.
For practices looking to manage their supply chain effectively, a guide to buying wholesale medical supplies offers practical insight into procurement without compromising on quality.
Choosing the best sutures for skin closure in veterinary practice requires an understanding of wound characteristics, patient factors, suture material types, and the clinical goals of each procedure. Non-absorbable monofilaments such as nylon and polypropylene remain the standard for external interrupted skin closure, while absorbable sutures like poliglecaprone 25 are well suited for subcuticular patterns where removal is not practical. The many types of sutures available today give veterinary professionals the flexibility to match their material choice precisely to the demands of each surgical case.
At Strouden, we supply a comprehensive range of veterinary surgical sutures designed to meet the rigorous demands of clinical practice. Our product range supports veterinary teams in achieving consistent, high-quality wound closures across a wide variety of procedures. To learn more about our suture offerings and other wound closure solutions, please contact us today.
A: For external skin closure, non-absorbable monofilaments like nylon or polypropylene are widely preferred. For subcuticular patterns, poliglecaprone 25 is a popular synthetic absorbable option that dissolves predictably and causes minimal tissue reaction.
A: Yes, absorbable sutures can be placed subcuticularly to close the skin without penetrating the surface. This eliminates the need for suture removal and is particularly useful in fractious animals or when client compliance with a return visit is uncertain.
A: Interrupted patterns are preferred for most skin closures because they distribute tension evenly and prevent total failure if one suture breaks. Continuous patterns are faster but are best reserved for clean, low-tension wounds where speed is a priority.
A: Monofilament sutures have a smooth, single-strand surface that resists bacterial wicking. Braided multifilament sutures have microscopic spaces between strands where bacteria can harbor, increasing infection risk in contaminated wounds.
A: Skin staplers are a practical choice for long incisions, orthopedic procedures, or emergency cases where rapid closure is needed. They provide consistent wound edge eversion and significantly reduce closure time compared to hand-placed sutures.
