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Efficacy of additional injection laryngoplasty after framework surgery
Hirohito Umeno1, Shun-ichi Chitose, Kiminori Sato
1Dept of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan.
The Annals of Otology, Rhinology, and Laryngology
|February 8, 2008
Summary
Additional injection laryngoplasty (AIL) effectively improves voice function after framework surgery (FS). Patients undergoing arytenoid adduction (AA) more frequently require AIL compared to thyroplasty (TP) due to increased bowing.
Area of Science:
- Otolaryngology
- Speech and Voice Science
Background:
- Unilateral vocal fold paralysis can lead to persistent glottal gaps after framework surgery (FS).
- Additional injection laryngoplasty (AIL) is a potential secondary treatment to optimize voice outcomes.
Purpose of the Study:
- To evaluate the efficacy of AIL following FS.
- To identify patient and procedural factors influencing the need for AIL.
- To understand the reasons for AIL requirement.
Main Methods:
- Fifty-two patients with unilateral vocal fold paralysis underwent FS (thyroplasty, arytenoid adduction, or both).
- The frequency of AIL requirement was analyzed per FS type.
- Voice function was assessed post-AIL.
- Phonatory width and bowing ratios were measured after arytenoid adduction.
Main Results:
- Arytenoid adduction (AA) cases required AIL more often than thyroplasty (TP) cases.
- AIL improved voice function in all treated patients.
- AA decreased width ratio but increased bowing ratio in 44% of cases.
Conclusions:
- AIL is effective for persistent glottal gaps post-FS.
- Higher AIL rates after AA are linked to increased bowing ratios.
- AIL offers significant voice improvement for selected FS patients.
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