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Cricothyroid Approximation

Every other operation that raises pitch changes the vocal folds themselves. This one leaves them alone. The surgeon opens the front of your neck, tilts the thyroid cartilage down towards the cricoid cartilage below, and holds the two together with sutures. The folds strung between them are stretched by that change of shape and nothing else. Tighter string, higher note.

Cricothyroid approximation, shortened to CTA, is also called Isshiki type IV thyroplasty. That one difference decides the rest of this page. Because the vibrating edge is never touched, the character of your voice survives better than you might expect. The pitch rise it can reach is larger than shortening the folds tends to manage. The sutures can be released again, so in principle it undoes.

Against that, two things. It needs a cut in the neck rather than work through your open mouth. And the height it buys tends to drift back down over the first year, as the cartilage settles and the sutures bed in. I have sat with people at six months who were delighted with this operation, and with people at fourteen months who were not. Same surgeon, same operation.

At a glance

Also known as
CTA, Isshiki type IV thyroplasty, type IV thyroplasty, cricothyroid approximation with suture fixation
Surgery time
1–2 hours
Anaesthesia
General, occasionally local with sedation so the surgeon can hear your voice
Hospital stay
Day case or one night
Back to work
2 weeks at a desk; longer if your job needs your voice
Full recovery
3–6 months; pitch judged at 12 months once any relapse has shown
Scar
A short horizontal line low on the front of the neck
Sensation
Numb, tight skin around the scar for some months; no change inside the throat
Typical cost
$9,000–$17,000 (United States, self-pay)

Figures reviewed .

On this page
  1. Who it’s for
  2. How it’s done
  3. Recovery
  4. Scars
  5. Sensation
  6. Risks
  7. Results
  8. Alternatives
  9. Combining
  10. Cost
  11. Surgeon
  12. FAQ

Who it’s for

The clearest candidate has a long way to travel. A voice that sits deep, months of therapy behind it, a trained pitch that still lands well short of where it needs to be. CTA reaches further than shortening the folds does. That reach is the reason to accept a neck incision.

The second group has already had surgery. A Wendler glottoplasty that raised pitch but not enough is one of the commonest routes onto this page. CTA works on the cartilage, so it does not have to disturb what the first operation built. Those are different pieces of anatomy, which is the practical argument for that order.

Who should look elsewhere. Anyone who has not done a serious stretch of therapy, because nobody can yet tell which part of your voice is habit. Anyone whose gap is small, since glottoplasty is the lighter first move in most hands now. Anyone for whom a visible neck scar is the thing they most want to avoid.

Singers should say so at the first appointment. This operation asks the most of the range they earn a living with. Nicotine stops for several weeks either side, and reflux gets treated before anyone books a theatre.

Before you book

Work out how big your gap actually is. Record your best trained voice, then record someone whose pitch you are aiming for, and listen to them back to back. A short distance points at the lighter operation through the mouth. A long one is the argument for accepting a cut in your neck.

How it’s done

You are usually asleep, neck extended over a support. Some surgeons prefer local anaesthetic with sedation for part of it. That way they can ask you to speak and hear where the pitch has landed before anything is tied off.

The incision goes low across the front of the neck, often in a skin crease. The surgeon separates the strap muscles down the midline to expose the front of the voice box. Sutures then go through the thyroid cartilage above and the cricoid cartilage below. Pulling those together rotates the thyroid cartilage down and forward, which stretches the folds behind it. Nothing enters the airway and the folds are not cut.

Some surgeons trim a narrow strip of cartilage so the two sit closer, or add a small plate to hold the position. How far to tilt is the judgement of the whole operation. Overtighten and the voice is high but strangled. Undertighten and there is little to show for a scar. The layers are closed, sometimes over a small drain, and most people are home that day or the next.

The week before

Get the week of silence stocked and settled before you go in. Soft food in the fridge, a notes app on your lock screen, the phone calls you have been putting off made while you still can. Swallowing will be sore and speaking is off the table, so anything that needs either one has to happen now.

Cricothyroid approximation recovery

The first week is silence, the same as for the operations done through the mouth. The result is held by sutures in cartilage that has not yet healed into position, and voice use pulls on exactly that. Nothing at all, and whispering counts as something, since it loads the folds harder than ordinary speech. People underestimate this part every time. The ones who set the week up in advance find it boring rather than wretched.

What the neck adds is a body to recover from. Swelling at the front, a throat that feels full, stiffness when you turn your head. Swallowing is uncomfortable for a few days. Nobody warns people that they will protect their neck instinctively for weeks, and that holding it rigid gives you a sore upper back.

Then the long part. Speech returns in rationed minutes, on a schedule your surgeon and therapist set between them. The voice that arrives is thin and unreliable, and it fills out over months. Therapy runs right through it and does not stop at discharge. The operation changed the tension on your instrument and nothing about how you play it.

Day 0 Home that evening or the next morning. Dressing on the neck, full-feeling throat, not a word from here. Notes app and paper.
Days 1–7 Complete voice rest, no whispering. Peak neck swelling. Soft food, head kept still, no throat clearing.
Week 2 Stitches or dressings checked. Rationed quiet speech starts. Desk work realistic; long calls are not.
Weeks 3–6 Talking time builds. Neck stiffness eases, scar turns pink and firm. Voice is high, breathy and tires within minutes.
Months 2–3 Volume and stamina return. Therapy moves from protecting the voice to shaping it. Range is honestly assessed here.
Months 3–6 Everyday use unrestricted for most. Scar softening. Any early slide in pitch has usually started by now.
Months 6–12 Settled pitch. Relapse has shown itself or it has not, and revision is planned in this window if it is needed.

After you're home

Set a reminder to loosen your neck and shoulders a few times a day. You will hold your head rigid to protect the incision without noticing, and the ache that causes gets blamed on the operation when it is really just tension.

Cricothyroid approximation scars

One horizontal line low on the front of the neck, a few centimetres long, placed in a crease where the surgeon can find one. It is red and firm for three to six months, then pale and flat for most people over a year. Necks heal unpredictably. A line here can stay raised, or widen where the skin was under tension.

It sits in the same territory as a tracheal shave, which matters if you want both. One incision serving two operations is a better outcome than two. Raise it before either is booked and let the surgeons plan the line between them.

Sensation after cricothyroid approximation

The skin above and below the scar is numb for some months, and a patch of it often stays dulled. That is small nerves divided by the incision, the ordinary picture after any neck operation.

Inside, nothing is cut, so there is no change in how your throat feels to you. What there is instead is tightness. A pulled, held feeling at the front of the neck, noticed most when you swallow or tip your head right back. For most people it fades over the first few months.

Risks and complications

The early ones belong to the neck. Bleeding under the skin, infection, a collection of fluid, and swelling that makes swallowing uncomfortable for a few days. The ordinary anaesthetic risks sit alongside them. Airway trouble deserves naming. Swelling around a voice box that has just been rotated can leave you short of breath on exertion, and it rarely but occasionally needs treating in its own right.

Then the risk specific to this operation. The result is held by sutures through cartilage, and cartilage is not generous material to sew into. Sutures can cut through it or loosen, or hold while the cartilage itself gives. When that happens the pitch falls. Some loss over the first year is common enough that surgeons build it into what they promise, and a fuller return towards where you started is a real if less frequent outcome.

Published series disagree on how often, and the honest answer is that it varies by surgeon and by patient. Revision is the other half of the problem. Going back into a healed neck to re-tighten sutures is harder than the first operation, and the second result is less predictable. The voice itself can stay hoarse, or come back with nothing held in reserve, so that a long conversation thins it out and a noisy room swallows it. Most of that improves over the first several months, and for some people some of it stays.

Cricothyroid approximation results

Judge this at a year rather than three months. The question with CTA is where the pitch settles, not where it lands. A good result is a comfortable speaking pitch you are not holding up with effort, a voice that survives a tiring day, and enough of your own tone left that you still sound like yourself.

What it costs is range at both ends. The top narrows, the bottom largely goes, and the middle is where you will live. Singing is often the casualty. The people I have walked through this who sang before thought hardest about it beforehand, and still found it a loss.

The other loss nobody anticipates is deliberate lowering. You cannot drop your pitch on purpose any more. The folds are held taut, you cannot untension them, and so the low voice is not available even when you want it.

The disappointment to plan against is expecting pitch to do therapy's job. A high voice with unchanged resonance still reads the way it always did. The people who keep seeing a therapist afterwards get noticeably more out of this than the people who treat it as finished.

Alternatives to cricothyroid approximation

Voice therapy alone comes first, and it is the only option with nothing to weigh against it. A good number of people find it is enough.

Then the real comparison. Glottoplasty shortens the vibrating length through the mouth with no scar, and it has become the more common first choice in many hands. For a moderate gap it is the lighter thing to try. CTA is the answer when the gap is large, or when a glottoplasty has not gone far enough, and it earns that by tilting the cartilage instead of touching the folds.

Feminisation laryngoplasty rebuilds the voice box and shortens the folds in one bigger neck operation. The recovery is heavier and the long-term evidence thinner. It is the other thing offered to someone who wants more than a glottoplasty gave them. If you are choosing between those two, I would get a second opinion first, because this is where surgeons disagree most.

Wendler Glottoplasty

A glottoplasty where the front portion of both vocal folds is joined together, so a shorter length is left to vibrate and the voice sits higher. Done through the mouth under general anaesthetic, with no external scar and a week of complete silence afterwards.

Best for: someone who has done months of voice therapy and still gets read as male on pitch alone

Combining cricothyroid approximation with other surgery

It pairs naturally with a tracheal shave. Both are reached through the front of the neck, so a single anaesthetic and a single line in the skin can serve the two of them, and that is the case most surgeons who do both will put to you. The other camp separates them by a few months, on the grounds that a voice box just rotated into a new position has enough healing to get on with. Either way round works.

What most of them do warn against is having the cartilage shaved first, somewhere else, with the voice question still unanswered. The tilt is harder to plan and to do through a neck that has already been opened and healed, so say early that both are on your list.

It combines badly with anything that needs you to talk your way through a recovery. A long facial operation on the same day adds anaesthetic time around a busy airway. Genital surgery is a separate trip.

Cricothyroid approximation cost

Get one number that covers the lot: theatre, anaesthetist, surgeon, and the scope done before any of it. Then find out where therapy sits. A practice with its own voice therapists is selling you something different from a practice that assumes you will find and fund one at home, and the headline figures can still match.

Press hardest on revision. Relapse is part of this operation's picture, so what happens if your pitch slides matters more here than it would elsewhere. A practice with a clear written answer has dealt with it before.

Funding is the weak spot. Getting therapy paid for is a far easier argument than getting an operation paid for, whoever is holding the budget, and US plans tend to file voice work under cosmetic. Appeals land sometimes, usually with a therapist writing in support.

CountrySelf-payPublic / insurance
United States Fewer surgeons offer it than glottoplasty, so quotes vary more widely $9,000–$17,000 Usually refused as cosmetic; a therapist's letter is what successful appeals tend to turn on
Thailand Add flights and roughly two weeks in country; therapy afterwards has to be arranged at home $4,000–$8,000 Self-pay only for international patients
United Kingdom A private quote normally covers the scope done beforehand £7,000–£12,000 Therapy is routinely available on the NHS; the operation only rarely and case by case

Choosing a cricothyroid approximation surgeon

This is a laryngologist's operation, and fewer of them do it than do glottoplasty. The first thing to establish is how often. The two numbers I would ask for are how many they perform in a year, and what share of their patients lost pitch afterwards. If the second answer is none, ask how far out they keep seeing people, because this operation shows its hand somewhere around the first year.

Then ask what they choose it for. Someone who reaches for CTA when the gap is large, or after a glottoplasty fell short, is thinking about the same thing you are. Someone who offers it to everyone should be able to say why. Ask to hear recordings from at least a year out, and ask to hear one where the pitch came back down.

At the consultation

Ask to hear a voice at a year, and then a voice that came back down. Relapse is the honest weak point of this operation, and how readily someone plays you that second recording tells you whether they have followed their patients long enough to know.

Frequently asked questions

Is this the same as a glottoplasty?

No, and the two get confused constantly. Glottoplasty joins the front of the vocal folds through the mouth. This tilts the cartilage around them through a cut in the neck. See alternatives.

Can it be reversed?

In principle, yes. The sutures can be released, which is more than most pitch operations offer, though the voice that follows is its own result rather than the one you had.

Will the pitch last?

Some of it commonly slides back over the first year as the cartilage settles. How much varies, and it is the main thing to ask a surgeon about. See risks.

Is a thyrohyoid elevation the same operation?

No. That one lifts the voice box towards the hyoid bone to brighten resonance, and it is sometimes added alongside a pitch operation rather than used instead of one.