Bernstein Medical Center for Hair Restoration

How Long Do Stitches Stay in After a Hair Transplant?

Q: I’ve heard that healing after a hair transplant requires stitches. How long will they stay in? — S.R., Cresskill, N.J.

A: In a Follicular Unit Transplant (FUT), the surgeon removes a thin strip of scalp from the patient’s donor area that supplies the follicular unit grafts for the hair transplant. After the strip is removed we use either sutures (stitches) or staples to close the wound.

We now close most wounds in the donor area with staples, rather than sutures, because we have found that staples cause less injury to the remaining hair follicles compared to sutures; therefore, more hair will be available for future hair restoration sessions. For more about sutures vs. staples, see Why We Changed from Sutures to Staples in FUT Hair Transplants.

Posted by Robert M. Bernstein M.D.

When Are Surgical Staples Removed After Hair Transplant?

Q: I hear you leave staples in sometimes up to three weeks after a hair transplant. Why do you leave staples in that long? – M.C., Boca Raton, FL

A: My reason for leaving some staples in longer is that the tensile strength of the wound continues to increase (significantly) during the first three week period after surgery — actually, it will continue to gain strength for up to one year post-op. To give the wound the best chance to heal, on average, I take out alternating staples at 10 days and the remaining staples at 20 days.

Although patients do complain that they are uncomfortable, removing half at 10 days offers enough relief for those who are bothered by them. The advantage of leaving the staples in longer is that the wound heals with a finer scar. And for patients who are very active, it allows them to resume activities more quickly. For each patient, I modify the time left in by surgery, length of incision, tension, and also the patient’s needs and ability to have them removed.

In contrast to sutures, staples do not leave any track marks and do not need to be removed as quickly. Sutures can also damage the surrounding hair by strangulating the follicles. Staples are interrupted (placed individually), so they don’t cause damage to the follicles adjacent to the wound edge.

Read more details about our use of surgical staples on the Donor Area page.

Posted by Robert M. Bernstein M.D.

Does FUT Hair Transplant Use Sutures or Surgical Staples?

Q: Do you currently prefer sutures or staples to close the donor area? — O.C., Dallas, TX

A: Staples, because they conserve more hair.

Posted by Robert M. Bernstein M.D.

Why Change from Sutures to Surgical Staples in FUT Hair Transplants?

Q: I recall that you wrote an article about Monocryl for the donor closure in hair transplants. Why are you now using staples? — R.S., Park Slope, NY

A: I have been using staples in almost all of our follicular unit hair transplants since the beginning of 2006. When we published the Sutures vs. Staples study in 2001, some doctors were still not convinced. Because of this I continued to look at the issue, not in a bilaterally controlled experiment, but just looking at my cases done with the 5-0 Monocryl and those with staples that I continued to use from time to time. After doing hundreds of additional cases, I was still convinced that, overall, the suture line looked better with the 5-0 Monocryl sutures than with the staples.

However, it occurred to me that perhaps we were looking at the wrong thing. I began to think that perhaps we should be looking at hair preservation, rather than cosmesis alone.

The problem with the appearance of stapled closures is that it results in a very well demarcated, geometric line. Monocryl sutures, on the other hand, results in a much softer, more smudgy line – the characteristic that made it look better in the study.

This effect is produced by two things. The first is that the very fine 5-0 Monocryl sutures placed very close to the wound edges allow perfect wound edge approximation. However, the running suture actually destroys some hair as it makes its spiral course through the skin, destroying some hair and producing this smudgy appearance. We had felt that suturing very close to the would edge, using fine suture caliber 5-0 Monocryl, advancing the running stitch on the surface rather than in the SC space, and the mechanism of action of Monocryl absorption (via hydrolysis rather than by an inflammatory reaction) would all mitigate against any hair loss – but there was still some. It seemed that although the overall look was better with sutures, it might be at the expense of some hair loss.

To test this, I began to look at the hair yields in the donor strips of second hair transplant procedures where the new harvest completely encompassed the old scar. It seemed, at least anecdotally, that the strip containing an old incision that had been sutured closed contained slightly less hair than that from one that was stapled closed, even if the former looked better. Although I did not do a rigorous study, this was my “sense.”

In addition, I realized that staples could be left in the scalp for 3 weeks after a hair transplant without causing excessive inflammation (patient discomfort not withstanding) and this gave me more flexibility in using staples in patients with slightly tight scalps without having to rely on subcutaneous sutures. I began to take out alternate staples at 7 to 10 days and the remaining staples at 18-21 days post-op.

With the issue of hair preservation, rather than just the cosmetic benefit, as the main goal and with the added flexibility of being able to leave in alternate staples for up to 3 weeks, I started using staples routinely in almost all of our hair transplants.

Posted by Robert M. Bernstein M.D.

Do You Use Sutures or Staples in an FUT Hair Transplant?

Q: Can you please comment on the use of sutures verses staples in hair restoration procedures? — S.S., Prospect Park, NY

A: Sutures are great on non-hair bearing skin and allow perfect approximation of the wound edges, but on the scalp they can cause damage to hair follicles below the skin’s surface. The reason is that a running (continuous) suture traps hair follicles and when the skin swells (as it normally does after hair transplants) the trapped follicles can strangulate and die.

Since staples are placed individually – about ½ cm apart – they don’t strangle the tissue. This allows the blood supply to flow freely to the wound edge permitting the blood’s oxygen to reach the follicles in the stapled area and minimizing the risk of any hair loss. The unimpeded blood flow also facilitates wound healing and can sometimes result in a finer scar, particularly in a tight scalp.

For these reasons, we now use staples in most of our hair transplants.

Posted by Robert M. Bernstein M.D.

After Hair Transplant, What Happens if Transplanted Area is Injured?

Q: I am a patient of yours who had a hair transplantation procedure done mostly in the crown area and in the front about seven months ago. The hair is just starting to come in nicely and is starting to fill in the bald spots. Yesterday I carelessly banged the top of my head against a beam in my attic and cut a nice gash in, you guessed it, a transplanted area. I’d say that the cut is about a good inch. My wife works for a doctor who is certified in facial plastic surgery and I had him suture up the gash. He did not cut any hair, but it took 4 stitches to close the wound. I’m worried about the impact on the transplanted area. Just when it was starting to come in nice I now have a bald spot that I suspect is going to stay as a result of the accident. Please advise. — V.F., Fort Lee, N.J.

A: There is not much you can do at this time. Depending upon the doctor’s suturing techniques; you may or may not have permanent hair loss from the trauma and subsequent suturing. The problem is that if the sutures are placed too far from the wound edge they can strangulate hair follicles, particularly if there is any swelling. Hair loss may be temporary, but if it is permanent, it should be minimal. Additional grafts can be added at your next hair restoration procedure to cover any area of hair loss and the scar from the injury, if it is visible.

Posted by Robert M. Bernstein M.D.

What is the Benefit of Staples in Closing Hair Transplant Donor Incision?

Q: I have heard that staples are uncomfortable after the hair transplant, why do doctors use them? — B.E., Great Falls, V.A.

A: Staples are used for two main reasons.

The first is that being made of stainless steel; they don’t react with the skin and, therefore, cause little inflammation.

The second is that, unlike sutures which are used with a continuous spiral stitch, each staple is separate and this causes minimal interruption to the blood supply. The combination of little inflammation and minimal interference with the blood flow facilitates healing and minimizes damage to hair follicles.

Although sutures are generally more comfortable after the hair transplant, the doctors who choose to use staples do so because they are the least injurious to the hair in the donor area.

Posted by Robert M. Bernstein M.D.

Can I Have a Hair Transplant if My Scalp is Tight from Prior Surgery?

Q: What can be done if I want to have a hair transplant and my scalp is very tight from prior surgeries? — R.R., Long Island, N.Y.

A: Follicular Unit Extraction is ideal in very tight scalps, provided that there is enough hair to extract without leaving the donor area too thin and provided that the follicles are not too distorted from the scarring.

With strip harvesting, undermining techniques may be helpful to close the wound edges once the strip is removed.

In undermining, the surgeon uses either a sharp instrument (scalpel) or blunt instrument (the dull edge of scissors) to separate the upper layers of the scalp (dermis and epidermis) from the lower part of the scalp (fascia). The hair transplant surgeon accomplishes this by spreading apart the fat layer of the skin or by cutting through scar tissue.

Undermining allows the upper layers of skin to literally slide over the lower layers and can significantly increase the ability to close a tight wound. However, if not done carefully, it may increase the risk of bleeding and injury to nerves and occasionally may damage hair follicles.

Undermining is usually used with a layered closure where the deeper tissues are brought together first with a layer of absorbable sutures before the surface of the skin is sutured closed with sutures that are removed.

Posted by Robert M. Bernstein M.D.

After FUT Hair Transplant Surgery, Can I Travel on an Airplane with Surgical Staples?

Q: I’ll be traveling from New York to Cincinnati the week after my hair transplant. Will I be able to get through airport security if I have staples? — D.B. Fort Lauderdale, Florida

A: Yes. Although the staples that we use to close the donor area after hair transplant or restoration procedures are made of stainless steel, they are too small to be picked up by metal detectors.

I generally prefer staples, as they are superior to sutures in preserving donor hair.

Posted by Robert M. Bernstein M.D.

What are Follicular Unit Transplantation and Follicular Unit Extraction, and How do They Differ?

Q: What is Follicular Unit Transplantation and how is it different from Follicular Unit Extraction? — H.L., White Plains, NY

A: Follicular Unit Hair Transplantation, called FUT for short, is a procedure where hair is transplanted in the naturally occurring groups of one to four hair follicles. These individual groups of hair, or units, are dissected from a single donor strip using a stereo-microscope. The area where the donor strip was removed is sutured closed, generally leaving a thin, fine, line scar.

In Follicular Unit Extraction, or FUE, the individual units are removed directly from the back or sides of the scalp through a small round instrument called a punch. There is no linear scar. There is, however, scarring from the removal of each follicle. Although the scars of FUE are tiny and round, the total amount of scarring is actually more than in FUT.

In addition, since in FUE the bald skin around each follicular unit is not removed, the total amount of hair that can be removed in FUE is substantially less than in FUT. This is because if one were to remove all the hair in an area, it would be bald. In FUT, the intervening bald tissue is removed along with the follicles in the strip.

Read our page on FUE vs. FUT

Posted by Robert M. Bernstein M.D.