Relaxation Thyroplasty
A relaxation thyroplasty, also called Isshiki type III thyroplasty, lowers the pitch of the voice. Through a cut in the front of the neck, the surgeon removes a thin strip from each side of the thyroid cartilage and sets its front section back. The vocal folds are anchored to that front section, so they end up shorter and slacker, and slack folds vibrate more slowly.
Very few people need it. Testosterone thickens the folds, and for most trans men and many non-binary people on it, that does the bulk of the work over the first year or two. Masculinization training handles what the hormone doesn't, including resonance and vocal weight.
This operation is for the minority left over, and it is far less studied than surgery to raise pitch. The published experience in trans men is a few small case series. Lowering pitch surgically is also less predictable than raising it, because slackening a fold weakens how firmly it closes as well as how fast it vibrates.
At a glance
- Also known as
- Isshiki type III thyroplasty, type III thyroplasty, pitch-lowering thyroplasty, voice lowering surgery
- Surgery time
- 1–2 hours
- Anaesthesia
- Often local with sedation, so you can speak during it; sometimes general
- Hospital stay
- Day case or one night
- Back to work
- About 2 weeks at a desk; longer if you talk for a living
- Full recovery
- 3–6 months; the final pitch is judged later still
- Scar
- About 4–5 cm across the front of the neck, at the level of the voice box
- Typical cost
- $8,000–$18,000 (United States, self-pay)
- Usually preceded by
- Testosterone and Your Voice
Figures reviewed .
On this page
Who it’s for
The person this is for has usually been on testosterone for at least a year, often two or more, and has worked on their voice with a speech-language pathologist. Their voice has dropped, just not far enough, and it still gets them misgendered on the phone. Surgeons want to see the hormonal change finished before they add to it, which in practice means monthly recordings that have stopped moving.
If you are earlier than that, this is not your page yet. Give testosterone its time and put the effort into training. Many people who ask about this surgery at six months stop asking at eighteen.
A voice that stays high on testosterone is not always a surgical problem. Some people keep speaking at their old pitch out of habit or muscle tension, even though the folds have thickened and could sit lower. A scope and a few sessions with a therapist tell the two apart, and when it is habit, training moves the voice further than surgery would. That check is the most useful thing that happens before this operation.
Some people who cannot or do not want to take testosterone ask about it too. Surgeons are more cautious here, because without the thickening the hormone brings, slackening the folds alone may lower pitch less, and there is even less experience to go on.
You may be awake for part of it. So the surgeon needs to know you can lie still, neck tipped back, for an hour or more. Nicotine stops for several weeks around the operation.
Before you book
Record yourself reading the same short passage once a month, starting now. If you are still early on testosterone the recordings may answer the question for you, and if not, they show the surgeon where your voice has been.
How it’s done
Before anything is booked, a laryngologist looks at your folds with a scope, often with stroboscopy to watch them vibrate. They record your speaking pitch, your lowest and highest notes, and usually how long you can hold a vowel on one breath. That last number matters here, because a fold that closes less firmly after surgery shows up as a shorter breath, and it gives everyone a baseline to compare.
On the day, the surgeon makes a short horizontal cut over the voice box and parts the strap muscles to reach the thyroid cartilage. They cut a narrow vertical strip out of the cartilage on each side, which frees the front section where the folds attach. That section is pushed back and fixed in its new position, leaving the folds shorter and under less tension.
Many surgeons prefer you awake and sedated for this part. They ask you to speak or hum, listen, and adjust how far the cartilage goes back before fixing it. It is the closest the operation gets to tuning, though it is still a judgement made in a swollen, numbed throat, and the voice you hear on the table is not the voice you end up with.
Surgeons differ on the details. Some take a strip from one side only, some from both, and they fix the front section in different ways. Those differences change how far the pitch can move and how much the closure of the folds suffers, which is why the surgeon's own results matter more than any general description of the operation.
The muscles and skin are closed, and most people go home the same day or the next morning.
At the consultation
Ask whether you will be awake and speaking during the adjustment, and what they will be listening for. Knowing that in advance makes the moment less strange, and you can tell them what matters to you, whether that is depth, strength or keeping your range.
Relaxation thyroplasty recovery
The neck is sore and swallowing feels bruised for about a week. What people find harder is not using their voice. Surgeons usually ask for a period of voice rest followed by a slow return to talking, and the exact rules vary more than for glottoplasty.
Early on the voice is often hoarse, breathy or weak from swelling, and pitch jumps around. It is tempting to test it every morning. Most people do, and the daily answer tells you very little.
Once cleared to talk, most people go back to their speech-language pathologist to learn to use the new setting without pushing. How long you stay quiet first, and how fast you build back up, is set by your surgeon.
| Day 0 | Home the same day or next morning. Sore throat, swollen neck, voice rest starts. |
|---|---|
| Week 1 | Stitches or strips off. Voice rest continues or eases into short, quiet use. |
| Weeks 2–4 | Desk work realistic. Talking more, but no shouting or singing. Voice hoarse and unsteady. |
| Months 1–3 | Swelling settling. Back with a voice therapist to learn to use the new setting. |
| Months 3–6 | Voice more stable. Most of the lasting change is audible by now. |
| Months 6–12 | Final pitch judged against the baseline. Any further change is small from here. |
In the first weeks
Put your voice rest rules on a card you can show people, and tell family and work before the day. It is far easier to stay quiet when nobody is waiting for you to answer.
Read more: Voice Training After Surgery
Relaxation thyroplasty scars
The incision runs across the front of the neck at the level of the voice box. Placed in or near a natural crease, it tends to fade to a pale line over a year, and stubble or a beard covers it further.
For the first few months it is a firm pink ridge. It can catch on a shirt collar. Once the wound has fully closed, silicone gel and sun protection help it flatten.
Risks and complications
In the first days the concern is the airway. The operation works on the frame that holds it open. Bleeding, infection and swelling are all uncommon, but swelling that makes breathing harder is an emergency.
The risks that matter are to the voice. Slack folds can close less firmly, leaving the voice breathier, quieter or quicker to tire, and you may run out of breath sooner mid-sentence. Losing the top of your range is common, which matters most to singers. Some people are left with a rough voice, a form of dysphonia, for longer than they expected.
The risk specific to this operation is the result itself. The drop can be smaller than hoped, and some of it can drift back as the cartilage heals. It can also overshoot into a voice that is lower but weaker than you wanted. With so few published cases, nobody can give you a reliable number for any of this, and a surgeon who offers one is overstating what is known.
Relaxation thyroplasty results
A good result is a voice that sits lower and gets you read correctly more often, while staying strong enough for a working day. The change is usually described in a few semitones, not a transformation, and it varies a lot from person to person.
Judge it against the baseline, not against memory. The same passage read at the same time of day, compared at six months and a year, shows what actually moved. So does the breath test from before surgery; if the pitch dropped but the breath got much shorter, raise it with the surgeon.
What tends to disappoint is expecting surgery to finish the job. A lower pitch floor does not change resonance or habit. The people I have seen happiest after voice surgery of any kind kept training afterwards.
Alternatives to relaxation thyroplasty
For almost everyone, the alternatives are the first-line options rather than a fallback. Time on testosterone, and a real course of training, move most voices further than this operation would. If you have had less than a year of either, those are the answer.
Other ways of lowering pitch exist, such as bulking the folds by injection. They have even less experience behind them and are best raised with a laryngologist as a question rather than a plan.
For some people the better choice is a voice slightly higher than they would like, with training aimed at the resonance and habits that decide how it is heard.
Combining relaxation thyroplasty with other surgery
This is rarely combined with anything. It is done by a laryngologist, while most other masculinizing surgery is done by plastic, breast or urological surgeons, so the two seldom share a theatre.
Timing is the thing to plan. Voice rest and the quiet weeks after it sit badly with a recovery where you need to ask for help, and a long one such as phalloplasty is the worst fit. Most people put a few months between this and any other operation, and do it once the rest of the calendar is quiet.
It is also worth telling any later anaesthetist that you have had surgery on the voice box, so they can take care when placing a breathing tube.
Relaxation thyroplasty cost
Very few surgeons offer this and published prices are scarce, so treat the table as a rough guide. It is priced in line with other operations on the voice box through the neck, and quotes vary widely.
Ask whether the quote includes the scope and stroboscopy beforehand, the follow-up checks, and voice therapy afterwards, which you will want. Insurers tend to decline it as cosmetic. An appeal rests on letters from your voice therapist and prescriber showing that testosterone and training have been given a fair trial.
| Country | Self-pay | Public / insurance |
|---|---|---|
| United States Offered by few surgeons; quotes vary widely and may be surgeon-only | $8,000–$18,000 | Usually declined; appeals rest on documented testosterone and therapy |
| Thailand Offered by very few surgeons; therapy afterwards has to be arranged at home | Quoted case by case | Self-pay only for international patients |
| United Kingdom A handful of private laryngologists; ask what the scope and follow-up add | £7,000–£13,000 | Not normally funded on the NHS; voice therapy may be |
Choosing a relaxation thyroplasty surgeon
You want a laryngologist who does laryngeal framework surgery regularly, meaning operations on the cartilage around the voice box, and who has done this one on trans patients before. Ask how many relaxation thyroplasties they have done, and how many for trans men. Small numbers are normal here, but you should hear a real one.
Ask to hear before-and-after recordings rather than see charts, and ask what a disappointing result sounded like.
Then notice what they ask you. A surgeon who wants to know about your time on testosterone and your training before talking about surgery is the one I would trust with this. One who books you straight in has skipped the step that matters most.
When you decide
Write down what you would count as a good result before you commit, in words rather than numbers. If what you wrote could also come from more time or more training, give those a proper go first.
Frequently asked questions
How much lower will my voice go?
Nobody can promise a figure. Published experience is small and results vary widely. See results.
Do I need to be on testosterone first?
Surgeons generally want at least a year, often more, plus voice training. See who it's for.
Can I still sing afterwards?
Often, but the top of your range may be lost and the voice may tire sooner. Worth raising early if singing matters to you. See risks.
Is it the same as the surgery trans women have?
It works on the same cartilage but in the opposite direction, slackening the folds instead of tightening or shortening them for a higher pitch. The feminization surgery hub covers that side.