Risks & Complications¶
VFS is a low-mortality, voice-affecting procedure. Most complications are nuisances that resolve in weeks. A smaller fraction permanently change voice quality, and a handful threaten the airway. This page exists for two audiences: pre-op patients trying to understand risk in concrete terms before consent, and post-op patients searching for whether what they're hearing in their own voice is "expected, settling" or "needs attention now."
For technique selection see Wendler's Glottoplasty, Cricothyroid Approximation, Feminization Laryngoplasty, and LAVA & Other Techniques. For voice rest, SLP, and the routine recovery timeline see Recovery & Voice Training.
How the literature counts¶
VFS series are small, heterogeneous, and definitionally inconsistent. Some count any transient hoarseness; others only count persistent dysphonia or return to the OR. When comparing numbers, watch for:
- Definition of complication. Mastronikolis (2022) and Song (2017) pool across heterogeneous endpoints. Single-surgeon series (Thomas, Kim) define more narrowly.
- Follow-up duration. Pitch regression — particularly in CTA — is a 3–5 year phenomenon. A 12-month series under-counts it severely.
- Surgeon volume. Thomas's FemLar numbers and Kim's combined-technique numbers come from very high-volume single operators and don't generalize to low-volume centers.
- Procedure mix. "VFS" lumps endoscopic web creation (Wendler), open pitch raise (CTA), open structural shortening (FemLar), and laser shortening (LAVA). They have different complication profiles and shouldn't be averaged.
A pragmatic split, used below: expected, manageable (the cost of admission, not a complication); less common but serious (active intervention, may require revision); and catastrophic (rare but materially changes the remainder of the patient's vocal life).
Call your surgeon today if any of these are happening
- Stridor (audible breathing) at rest or on minimal exertion
- Shortness of breath at rest, or new dyspnea any time post-op
- Frank hemoptysis (coughing blood), or blood-streaked sputum past week 2
- Sudden complete voice loss after the first 48 hours
- Fever above 38.5 °C (101.3 °F) with throat pain or swelling
- Sharp new throat or neck pain after week 4, especially with swelling
- Aspiration of thin liquids (coughing/choking when drinking water)
Stridor and dyspnea are airway emergencies. If your surgeon is unreachable, go to an ED and ask them to contact ENT — bring your operative report if you have it.
Expected, manageable outcomes¶
These are universal or near-universal across VFS techniques. Counsel pre-op so they aren't perceived as failures post-op.
Hoarseness in early recovery¶
Hoarseness is the cost of admission. Timeline depends on whether the surgery was endoscopic or open:
- Endoscopic (Wendler's Glottoplasty, LAVA): mild to moderate hoarseness for 2–6 weeks; clear voice typically by 8–12 weeks once edema and suture reaction settle.
- Open (CTA, FemLar): hoarseness 4–12 weeks; full vocal quality stabilization at 6–12 months as cricothyroid biomechanics rewire and cartilage remodels.
Voice rest protocols vary by surgeon — typically 7–14 days strict, then graduated. Whisper is not rest; counsel against. See Recovery & Voice Training for the full post-op timeline.
Loss of low vocal range¶
Universal and irreversible across all techniques. Patients lose access to the pre-op chest register at the bottom of their range:
- Wendler / LAVA: roughly the bottom 3–6 semitones gone.
- CTA: the cricothyroid is permanently locked in tilt; the low end is gone by mechanical design.
- FemLar: bottom 4–8 semitones unrecoverable due to fold shortening.
This is not a complication and is not revisable — the loss of low range is mechanical and intentional. For chest-register singers it is a major lifestyle decision. See Singer and voice-professional considerations below.
Mild persistent breathiness¶
Some breathiness is common in the first 3–6 months as glottic closure adapts to the new fold geometry. Standard remedy is post-op SLP focused on resonance and adduction; most patients improve substantially with 8–16 sessions. Mild breathiness that improves week over week with SLP is on track.
Less common but serious complications¶
Pitch regression¶
The single most common reason for revision. Mechanism differs by procedure:
- CTA: suture pull-through of thyroid or cricoid cartilage, particularly in older patients with calcified cartilage. Multiple series report 20–60 Hz drop in mean F0 over 1–5 years — the dominant historical reason CTA has fallen out of favor as a primary procedure.
- LAVA: re-lengthening of the vibrating segment as anterior scar matures and stretches.
- Wendler: web breakdown — the intentional anterior web fails to fuse and pulls apart in the first 6–12 weeks. Once formed and held past 12 weeks, durable.
- FemLar: lowest reported regression; structural shortening is held by cartilage-to-cartilage approximation, not soft tissue alone.
Steady regression at 6–12 months post-op is the picture that warrants revision discussion. Settling at 3 months is often just edema resolving.
Vocal fold scarring (sulcus vocalis, stiffness)¶
Loss of mucosal wave on stroboscopy. Voice becomes rough, strained, or diplophonic. Highest risk with LAVA (laser energy applied directly to the vibrating margin). Wendler can cause scar at the anterior commissure, but the vibrating mid-fold is usually spared if technique is clean.
Poorly revisable. Steroid injection, hyaluronic acid augmentation, and SLP can soften symptoms but cannot restore mucosal pliability.
Anterior commissure web malformation¶
The intentional web is either too thick / too long (causing dysphonia, stridor, effortful voice) or too short (causing inadequate pitch elevation). Specific to Wendler and FemLar. Symptoms: stridor on exertion, biphonia, audible breathing, dysphonia worse than expected at 3+ months.
Revision is web resection or revision glottoplasty. Rates of true airway-compromising web are under 2% in published Wendler series.
Permanent breathiness affecting voice quality¶
Distinct from the mild self-limited breathiness above. This is glottic insufficiency that does not resolve with SLP — reported in roughly 5–10% of Wendler patients at 12 months in larger series. Most concerning for trained singers and voice professionals where breath efficiency is a job requirement.
Revision options (medialization, injection laryngoplasty) produce modest gains but rarely restore pre-op breath economy.
Suture extrusion or granuloma¶
Wendler-specific. Non-absorbable or slow-absorbing sutures used to create the web can extrude through mucosa weeks to months later. Symptoms: globus, throat-clearing, point pain, sometimes blood-streaked sputum.
Typically managed in clinic with suture removal under flexible endoscopy. Does not usually compromise the web result if it occurs after week 8–12. Granuloma may require steroid injection or microsurgical removal.
Persistent point pain or visible suture is a same-day call
Suture extrusion is fixable in clinic if caught early. Left alone, it can drive granuloma formation, persistent infection, or web disruption. If you can feel a hard point, see a strand on a phone-camera throat shot, or have unilateral throat pain that doesn't move with swallowing, ask for flexible endoscopy.
Vocal fold paralysis¶
Recurrent laryngeal nerve injury during open approaches (CTA, FemLar). Rare but devastating. Reported under 1–2% in published series; some single-surgeon series report zero across several hundred cases (technique-dependent).
Symptoms: severe breathiness, vocal fatigue, aspiration on thin liquids, weak cough. Recovery over 6–12 months if neurapraxia; permanent if transection. Injection laryngoplasty or medialization thyroplasty for permanent cases — voice usable but not normal.
Catastrophic complications (rare)¶
Permanent voice loss¶
Very rare; reported as case reports rather than series rates. Mechanism is bilateral fold scarring, bilateral RLN injury, or catastrophic web failure requiring airway reconstruction.
Airway compromise¶
Rare but possible, particularly with FemLar (open structural shortening) and with pathologically thick anterior webs. Stridor at rest or dyspnea on minimal exertion is an emergency. May require tracheostomy in extreme cases. Reported in under 1% of FemLar in Thomas's published series.
Complication rates by series¶
Ranges synthesized from peer-reviewed series cited in Sources. Series differ in how they define "complication" — use the ranges, not point estimates.
| Series / technique | n | Any complication | Pitch regression / revision | Major (paralysis, airway, permanent dysphonia) |
|---|---|---|---|---|
| Wendler glottoplasty (Mastronikolis 2022, pooled) | ~150 | 8–14% | 5–10% revision for inadequate gain | <2% |
| Wendler (Anderson 2014) | 30+ | ~10% | ~7% | 0 reported paralysis |
| Wendler + LAVA combined (Kim 2017, Casado 2016) | 40–80 each | 10–20% | 10–15% | 1–3% scarring |
| LAVA isolated (de Boer 2020) | ~60 | 12–18% | 10–15% | 3–5% mucosal scarring |
| CTA (Yang 2002, Neumann 2002) | 30–50 each | 12–25% | 30–50% regression at 5 yr | 1–2% |
| FemLar (Thomas 2018, 2020) | 100+ | 5–10% | 3–7% revision | <1% airway, <1% paralysis |
| Combined Wendler + CTA staged | varies | 15–25% | ~10% | 2–3% |
Headline: across all techniques, 5–15% any complication and 5–15% revision for inadequate pitch gain or regression. Lower end belongs to FemLar in experienced hands; upper end to CTA at 5+ year follow-up.
What revision can and can't fix¶
| Problem | Revisable? | How |
|---|---|---|
| CTA pitch regression | Yes | Re-do CTA, convert to Wendler, or add fat / HA augmentation to anterior fold |
| Wendler web breakdown | Yes | Repeat glottoplasty, sometimes with longer suture course |
| LAVA re-lengthening | Partially | Repeat LAVA carries scar risk; conversion to Wendler is often safer |
| Anterior web too thick (stridor) | Yes | Web resection / revision glottoplasty |
| Suture extrusion / granuloma | Yes | In-clinic removal under flexible endoscopy; steroid for granuloma |
| Sulcus / scar stiffness | Poorly | HA / fat / steroid; SLP. Rarely restored to pre-op pliability |
| Permanent breathiness | Limited | Medialization, injection laryngoplasty; outcomes modest |
| RLN paralysis | Limited | Injection medialization or thyroplasty; voice usable but not normal |
| Loss of low range | No | Mechanically permanent across all techniques |
The honest version, when counseling pre-op patients: revision is good at web problems and CTA regression. It is bad at scar stiffness, nerve injury, and breath economy.
Singer and voice-professional considerations¶
Trained singers are the highest-risk population for being dissatisfied. The breath economy required for sustained singing is fragile; small persistent breathiness that a casual speaker ignores will end a singing career. Multiple voice surgeons (Thomas, Mastronikolis, Casado) advise professional singers toward voice training first and surgery only as last resort, and document this in consent.
Loss of low chest register is non-negotiable: an alto or tenor singer cannot expect to keep their lower octave. For speaking-voice professionals (teachers, broadcasters, attorneys, clinicians), risk is lower but still meaningful — counsel on a 6–12 month recovery timeline before unrestricted professional use.
If singing is your livelihood or core identity, the realistic recommendation is voice training to a feminine target without surgery. See Recovery & Voice Training.
Triage: what is normal vs urgent¶
| Symptom (post-op) | Likely normal if... | Call surgeon if... |
|---|---|---|
| Hoarseness | Improving week over week, weeks 1–12 | Worsening, or unchanged at >12 weeks |
| Breathiness | Mild, improving with SLP | Severe, with aspiration, or worsening |
| Throat pain | Decreasing, week 1–3 | Sharp new pain after week 4, fever, swelling |
| Globus / throat-clearing | Mild, intermittent | Persistent point pain or visible suture |
| Stridor (audible breathing) | Never normal | Always — same-day contact |
| Dyspnea at rest | Never normal | Always — emergency |
| Blood-streaked sputum | Trace, week 1 | Frank blood, or any bleeding after week 2 |
| Voice fatigue | Common weeks 1–8 | Worsening or with aspiration |
| Pitch lower than expected at 3 mo | Possible, edema settling | Steady regression at 6–12 mo |
Long-term outcomes (5+ years)¶
- FemLar: most durable. Thomas's 5-year follow-ups show under 10 Hz mean drop from 12-month pitch in patients without revision.
- Wendler: intermediate durability. Most regression occurs in the first 6–12 months as the web matures; stable thereafter if the web held.
- CTA: poor long-term durability. Multi-year regression documented across series, with mean F0 drift of 20–50 Hz over 3–5 years.
- LAVA: limited long-term data; intermediate to poor based on available series.
Pre-op risk stratification¶
- Age >60 with calcified cartilage: CTA carries higher pull-through regression risk; lean Wendler or FemLar.
- Smoker / vaper: scar risk up across all techniques; quit pre-op.
- Reflux (LPR): control before surgery; uncontrolled reflux raises scar and granuloma risk.
- Trained singer: lean toward voice training only, or accept that professional singing may end.
- Prior thyroid or anterior neck surgery: increased RLN injury risk on open approaches.
- Connective tissue disease: poor scar predictability; counsel cautiously.
Sources¶
Primary cohort and review series¶
- Anderson JA. — Pitch elevation in trans women. Journal of Voice. 2014;28(6):820–827. (Wendler outcomes series.)
- Mastronikolis NS, et al. — Wendler glottoplasty for voice feminization: systematic review. European Archives of Oto-Rhino-Laryngology. 2022. (Pooled complication and revision rates.)
- Casado JC, et al. — Voice feminization by laser-assisted vocal adjustment (LAVA). European Archives of Oto-Rhino-Laryngology. 2016;273(11):3735–3742.
- Kim HT. — A new conceptual approach for voice feminization: 12-year experience of more than 500 cases. Laryngoscope. 2017;127(5):1102–1108. (Combined Wendler / LAVA series.)
- Yang CY, Palmer AD, Murray KD, et al. — Cricothyroid approximation to elevate vocal pitch in male-to-female transsexuals. Annals of Otology, Rhinology, and Laryngology. 2002;111(6):477–485. (CTA outcomes and regression.)
- Thomas JR, Macmillan C. — Feminization laryngoplasty: assessment of surgical pitch elevation. European Archives of Oto-Rhino-Laryngology. 2013;270(10):2695–2700.
Additional cohort and topical references¶
- Wendler J. — Vocal pitch elevation after transsexualism male to female. Proceedings of the Union of European Phoniatricians, 1990. (Original glottoplasty description.)
- Neumann K, Welzel C. — The importance of the voice in male-to-female transsexualism. Journal of Voice. 2004;18(1):153–167. (CTA long-term regression.)
- Song TE, Jiang N. — Transgender phonosurgery: a systematic review and meta-analysis. Otolaryngology–Head and Neck Surgery. 2017;156(5):803–808. (Cross-technique complication synthesis.)
- Van Damme S, et al. — Pitch-raising surgery in male-to-female transgender patients: systematic review. Journal of Voice. 2017;31(2):244.e1–244.e5.
- Brown S, Hervey-Jumper H, Jiang N. — Voice-related quality of life after gender-affirming voice surgery. Journal of Voice. 2022. (Patient-reported outcomes including breathiness.)