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KMID : 0384020070180010011
Journal of the Korean Society of Logopedics and Phoniatrics
2007 Volume.18 No. 1 p.11 ~ p.15
Type ¥°Thyroplasty Using Hydroxylapatite Implant(VoCoM(R))
Park Young-Hak

Song Chang-Eun
Cho Seung-Ho
Im Dong-Jae
Abstract
Background and Objectives: VoCoM(R) is a set composed of prefabricated hydroxylapatite implants and shims of various sizes that are designed for the type I thyroplasty, Authors aimed to evaluate the efficacy of VoCoM(R) System in type I thyroplasty.

Materials and Method: Twenty three patients with unilateral vocal cord palsy were included in the study, who received type I thyroplasty with VoCoM(R) between May 2000 and May 2007 in St. Mary¡¯s Hospital, The Catholic University of Korea, Seoul, Korea, Acoustic, aerodynamic and stroboscopic analyses were performed pre-and post-operatively, Subjective voice improvement was analysed by Voice handicap index,

Results: Preoperative jitter was 4.68{¡¾}2.46% and improved to 3.19{¡¾}1.94%(P<0,05), Preoperative NHR was 0.26{¡¾}0.1 and improved to 0.18{¡¾}0,07(P<0.05), Preoperative MPT was 6.16{¡¾}4.9secs improved to 9.55{¡¾}4.67secs(p<0.05), The postoperative stroboscopy revealed an effective medialization of vocal fold of all patients,

Conclusion: Type I thyroplasty using VoCoM(R) is a efficient, safe and convenient way of vocal fold medialization at the expense of its high cost and difficulty in removal.
KEYWORD
Vocal cord palsy, Type¥°thyroplasty, Hydroxylapatite
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