✨ Suture Materials: What Veterinary Nurses Need to Know

Suture material can look deceptively simple — a packet of thread used to close a wound. But different materials behave very differently, and choosing the right one depends on the tissue being sutured, how long it needs support, the amount of tension at the wound site and the potential for infection.

For veterinary nurses and students, understanding the basic properties of suture materials can make theatre preparation, instrument handling and surgical nursing much easier.

✨ What makes an ideal suture material?

There probably isn't one material that is perfect for every situation, but an ideal suture would have several useful properties.

It should be easy to handle, pass smoothly through tissue and have enough tensile strength to support the wound while healing takes place. It should also cause minimal tissue trauma and reaction, provide good knot security and ideally resist bacterial colonisation.

Absorbable materials should also break down at a predictable rate that matches the healing requirements of the tissue.

✨ Key suture terms

When comparing suture materials, you might come across several different terms.

Tensile strength describes how much force the material can withstand before breaking.

Memory is the tendency of the material to return to its original shape after being removed from the packet.

Tissue drag is the resistance felt as the suture passes through tissue.

Tissue reaction refers to the inflammatory response produced by the body.

Knot security describes how well a knot remains tied without loosening.

Capillarity is the ability of a material to absorb and transport fluid along its length.

Chatter describes the friction or resistance felt when tying the material.

These properties affect everything from how easy a material feels to handle to how it behaves once it has been placed in the patient.

✨ Absorbable vs non-absorbable sutures

One of the main ways we classify sutures is into absorbable and non-absorbable materials. They can also be classified as natural or synthetic and as monofilament or multifilament.

Absorbable sutures

Absorbable materials are designed to gradually break down within the body. They may be broken down through enzymatic processes or hydrolysis, depending on the material.

Examples include:

Polyglactin 910 — Vicryl

A synthetic, braided absorbable material. It is coated to improve handling and is absorbed through hydrolysis. It can be used for areas including subcutaneous, intradermal and muscular layers, as well as mucous membranes.

Poliglecaprone 25 — Monocryl

A synthetic monofilament with high initial strength and minimal tissue drag and reaction. It may be used for subcutaneous and intradermal closure.

Polydioxanone — PDS II

A monofilament material that retains its strength for longer and may therefore be useful in slower-healing tissues. It has minimal tissue reaction and reduced tissue drag.

Non-absorbable sutures

Non-absorbable materials are not broken down by the body. They may be removed once healing has taken place or remain within the body when long-term support is required.

Examples include polypropylene, polyamide, polyester and stainless steel.

Polypropylene is a synthetic monofilament with low tissue reactivity and may be used for areas such as vessel repair and skin. Polyamide is also a synthetic monofilament and has minimal tissue drag, although its handling and knot security can be poorer.

Monofilament vs multifilament

A monofilament suture consists of a single strand of material, whereas multifilament or braided sutures consist of multiple fibres woven together.

This difference affects properties such as handling, knot security, tissue drag and the potential for fluid or bacteria to travel along the material.

For example, braided non-absorbable materials can wick bacteria, which is an important consideration when infection is present.

✨ Does one suture work for every tissue?

No — and this is exactly why understanding the different materials matters.

Different tissues have different healing times, tension requirements and sensitivities. Your guide gives examples such as polypropylene for blood vessels, fine synthetic absorbable material for the subcutis, and monofilament nylon or polypropylene for skin.

Rather than simply memorising which suture goes where, try to think about why a material might have been chosen.

How quickly will the tissue heal?

Does it need support for a long time?

Is infection a concern?

How much tissue reaction would be acceptable?

That way, suture selection becomes much easier to understand rather than another list to memorise.

✨ Want to learn about suture materials in a simpler way? ✨

If you’re studying theatre practice and want everything broken down into clear, student-friendly sections, my Suture Materials + Patterns Guide goes through the key topics in a simple, visual way.

It’s designed to help student veterinary nurses understand the basics without feeling overwhelmed — perfect for revision, placement support or building confidence with theatre practice topics.

You can find the guide here:

https://thatvetnurselife.co.uk/products/a6-suture-materials-patterns-40-pages-guide-for-veterinary-nurse-vet-students?_pos=1&_psq=suture+materials&_psid=14a0cbf2f&_ss=e

 

Thank you, 

Jade x