A matrixectomy is a procedure that permanently destroys part or all of the nail matrix, the tissue at the base of your nail responsible for nail growth, so that the affected portion of the nail never grows back. It is the most common treatment for recurring ingrown toenails that haven’t responded to conservative care. The procedure is typically performed in a doctor’s office under local anesthesia and takes about 15 to 30 minutes.
Why It’s Done
The vast majority of matrixectomies are performed on big toes with chronic or recurring ingrown nails. When the edge of a nail repeatedly digs into the surrounding skin, it causes pain, swelling, and sometimes infection. Milder ingrown nails can often be managed by soaking, proper trimming, or placing a small wedge under the nail edge. But when the problem keeps coming back, or when the surrounding tissue has become severely inflamed or overgrown with granulation tissue (the raw, fleshy bumps that form around a chronically irritated nail border), a matrixectomy is the standard next step.
The procedure is also used for pincer nails, a condition where the nail curves inward on both sides and pinches the underlying skin. In more advanced cases, a total matrixectomy removes the entire nail matrix so no nail regrows at all.
Partial vs. Total Matrixectomy
In a partial matrixectomy, only the strip of matrix responsible for the problematic nail border is destroyed. The rest of your nail continues to grow normally, just slightly narrower than before. This is by far the more common version. A total matrixectomy destroys the entire matrix, and the nail never regrows. This is reserved for the most severe or repeatedly recurring cases, or when the nail is deformed beyond repair.
Chemical, Surgical, and Laser Methods
There are three main ways to destroy the nail matrix, and each has trade-offs.
Chemical matrixectomy is the most widely used approach. After the offending nail border is removed, a chemical agent is applied directly to the exposed matrix to destroy the cells. The two most common agents are phenol (used at 88% concentration) and sodium hydroxide (used at 10% concentration). Both are effective at preventing regrowth, with reoperation rates around 6.5% for phenol and 7.8% for sodium hydroxide. There is no statistically significant difference between them. After application, sodium hydroxide is neutralized with acetic acid, while phenol is diluted with alcohol.
Surgical matrixectomy involves physically cutting out the matrix tissue, sometimes along with the surrounding nail fold. This method carries a higher risk of infection compared to chemical approaches. One analysis found the odds of infection were about seven times greater with surgical matrixectomy than with phenol-based chemical matrixectomy. Surgical methods also tend to involve more bleeding: roughly 31% of surgical patients experienced prolonged bleeding beyond 24 hours.
Laser matrixectomy uses a CO2 laser to destroy the matrix tissue. It is typically reserved for recurrent or severe cases and is less commonly available than the other two methods.
What Happens During the Procedure
Your toe is first cleaned with an antiseptic solution. A local anesthetic is injected around the base of the toe in what’s called a ring block, which numbs the entire toe. You’ll feel the initial needle stick, but after that, the toe goes completely numb. A small elastic band or tourniquet is placed at the base of the toe to control bleeding and keep the area clear.
The doctor then separates the problematic nail border from the nail bed and removes it. In a chemical matrixectomy, the exposed matrix is then treated with the chemical agent for a set period, usually applied with a cotton-tipped swab. In a surgical approach, the matrix tissue and sometimes the adjacent nail fold are cut away. The tourniquet is released, and the toe is bandaged.
The entire process is quick. Most people describe feeling pressure but no pain during the procedure itself.
Recovery and Healing Timeline
Healing after a chemical matrixectomy typically takes about two to three weeks. Studies report an average healing time of roughly 21 days for phenol-based procedures, though some people heal faster. The toe will ooze and drain during this period. Phenol-based matrixectomies tend to produce the longest drainage, averaging about 14 days. Sodium hydroxide averages around 11 days, and trichloroacetic acid about 6 days.
Most people can walk immediately after the procedure, though the toe will be sore for the first few days. Closed-toe shoes may be uncomfortable during the first week. Many people return to normal daily activities within a day or two, but strenuous exercise or activities that put pressure on the toe are best avoided until the wound has largely closed.
Aftercare Instructions
Leave the initial bandage in place until the next day, unless it becomes heavily soaked with blood. Starting about 12 hours after the procedure, soak your toe two to three times a day for 10 minutes in warm salt water (about 2 tablespoons of salt per quart of water). These soaks help keep the wound clean and promote healing.
For the first three to four days, cover the toe with gauze rather than a small adhesive bandage. Gauze allows better airflow. Once drainage becomes minimal, you can switch to an adhesive bandage during the day and leave the toe uncovered at night to let it breathe. Keep the wound covered at all times during those first few days, especially when wearing shoes or socks.
Risks and Complications
Matrixectomy is a low-risk procedure overall, but complications can occur. Infection is the most significant concern, particularly with surgical methods. People with diabetes, vascular disease, compromised immune systems, or who smoke face a higher risk of infection and slower healing because blood flow to the toes is already reduced in these conditions.
Prolonged oozing or bleeding is common and expected, not necessarily a complication. If you take blood-thinning medications, let your doctor know beforehand, as these increase the chance of extended bleeding. Chemical burns to surrounding skin are possible if the agent contacts healthy tissue, though careful application and the use of protective barriers minimize this risk.
Recurrence, meaning the nail border grows back and becomes ingrown again, happens in roughly 7 to 11% of cases depending on the chemical used. When regrowth does occur, a repeat procedure is usually straightforward.
What the Toe Looks Like Afterward
After a partial matrixectomy, your nail will be permanently narrower on the treated side. The appearance is generally cosmetically acceptable, and most people are satisfied with the result. The skin where the nail border used to be gradually fills in and forms a smooth edge. After a total matrixectomy, the nail bed eventually hardens and forms a firm, skin-covered surface where the nail once was. It can look unusual at first, but the area smooths out over several months.