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Thyroplasty for adductor spasmodic dysphonia: further experiences
N Isshiki1, T Haji, Y Yamamoto
1Isshiki Clinic for Plastic Surgery and Otolaryngology, Kyoto, Japan.
The Laryngoscope
|May 19, 2001
Summary
Type 2 thyroplasty effectively treats adductor spasmodic dysphonia (SD), restoring normal voice in most patients. Surgery without a graft is simple and provides lasting results for this vocal cord disorder.
Area of Science:
- Laryngology
- Neurology
- Surgical Innovation
Background:
- Adductor spasmodic dysphonia (SD) is a neurological voice disorder characterized by involuntary vocal fold adduction.
- Surgical interventions, specifically midline lateralization thyroplasty (type 2 thyroplasty), are explored for SD treatment.
- Two techniques, with and without grafts, are compared for efficacy in SD management.
Observation:
- A retrospective review of six SD patients undergoing type 2 thyroplasty was conducted.
- Pre- and post-operative videolaryngoscopy and surgical recordings were analyzed.
- Patient outcomes were assessed over follow-up periods ranging from 6 months to over 3 years.
Findings:
- Type 2 thyroplasty resulted in normal or near-normal voice in 5 out of 6 patients.
- The technique without a graft, inducing vocal fold bowing, proved effective and simple to perform.
- No recurrence of SD symptoms was observed during the follow-up period.
Implications:
- Type 2 thyroplasty is a highly effective surgical treatment for adductor spasmodic dysphonia.
- The graftless technique offers a straightforward and durable solution for SD.
- Further research may explore patient selection criteria for optimal outcomes in SD surgery.