A stick tie is a suture attached to a needle that surgeons use to tie off a blood vessel or other structure during an operation. Unlike a simple tie, where a strand of suture is looped around a vessel and knotted, a stick tie first passes through the tissue with a needle before being tied down. This anchoring step is what gives the technique its key advantage: the suture can’t slip off.
How a Stick Tie Works
The basic idea is straightforward. A surgeon threads a needle through a blood vessel, duct, or the tissue immediately next to it. Once the needle has passed through, the suture material is tied around the structure, creating a secure knot that is physically anchored in place. Additional knot throws are added as needed to lock everything down.
You may also hear this technique called a “suture ligature” or a “transfixion suture.” All three terms describe the same thing: a ligature (a tie around a vessel) that has been fixed in place by first stitching through the tissue. The word “stick” in stick tie refers to that initial needle pass, the literal stick through the structure.
Why Surgeons Choose It Over a Simple Tie
A simple tie, also called a free tie, is just a strand of suture wrapped around a vessel and knotted. It works well for small, superficial vessels that a surgeon can easily clamp. But simple ties have a weakness: they can slide off. If a vessel is large, slippery, or under significant blood pressure, a loose knot can shift and allow bleeding to resume.
Stick ties solve this problem. Because the suture passes through the vessel wall or surrounding tissue before being knotted, it is physically locked in position. This makes the technique especially useful in two situations: when dealing with large-diameter vessels where a simple tie is more likely to slip, and when working on deep structures where clamping with a hemostat is difficult or risky. In those deeper areas, a surgeon may not have the room or angle to place a clamp securely, so anchoring the suture with a needle provides a more reliable option.
What It Looks Like in the Operating Room
From a practical standpoint, a stick tie involves a needle holder (a clamp-like instrument that grips the needle), a curved surgical needle, and a length of suture material. The surgical technologist, sometimes called a scrub tech, prepares the stick tie by loading the needle into the tip of the needle holder at a 90-degree angle, oriented for either left-handed or right-handed suturing depending on the surgeon’s dominance. The needle holder’s locking mechanism is fully engaged before passing it to the surgeon.
When handing off the instrument, the scrub tech grasps the lock box and snaps it into the surgeon’s palm. The trailing suture is draped over the back of the tech’s hand so it doesn’t tangle in the surgeon’s fingers during the transfer. This choreography matters because stick ties are often used during moments of active bleeding, and a smooth handoff saves critical seconds.
Common Suture Materials
Stick ties can be performed with a range of suture materials, and the choice depends on the tissue being ligated and whether the suture needs to dissolve over time or remain permanently.
- Silk: A braided, non-absorbable material that handles easily and holds knots well. It has long been a go-to choice for vessel ligation because it ties smoothly and stays secure.
- Vicryl (polyglactin): A braided absorbable suture that breaks down in the body over several weeks. It is commonly used when a permanent suture isn’t needed.
- Chromic gut: An absorbable suture made from processed animal tissue. It dissolves faster than synthetic options and is used in situations where only short-term support is necessary.
Regardless of the material, knot security is critical. Research on knot-holding capacity has shown that three square knots (also called half-hitches over reversed posts) provide an optimal balance of security and efficiency. Fewer throws risk loosening, while more add bulk without meaningful benefit.
Risks of Poor Technique
When placed correctly, stick ties are among the most reliable methods for controlling bleeding. But the technique does carry risks if executed poorly. Passing the needle too aggressively through a vessel wall can lacerate it, turning a controlled ligation into a bigger bleeding problem. Placing the suture too tightly can cut off blood supply to surrounding tissue, potentially causing tissue death in the area. In procedures involving delicate anatomy, surgeons also have to be mindful of nearby structures. During pelvic surgery, for instance, transfixion sutures placed too wide can injure the ureter or compromise blood flow to the organ being repaired.
The needle pass itself is the highest-risk moment. Once the suture is anchored and the knot is tied correctly, the ligature is quite stable, which is precisely why the technique exists in the first place.