In males, the
thyroarytenoid muscle increases in mass, and the shape of the vocal folds becomes more rectangular.
proposed this procedure in 1984.[2] Endoscopic laser surgery had commonly been used but could result in the formation of granulation tissue leading to renarrowing of the airway or excessive enlargement of the glottic lumen which was irreversible.[3] Most of the laser surgery actually ablated partial arytenoid cartilage, large proportion of vocal ligament, and the
thyroarytenoid (TA) muscle to achieve enlargement of the glottic lumen.[3],[4],[5] The cricoarytenoid joint (CAJ) and CAJ fixation (CAJF) were often developed after the first session of laser surgery.
Geometric structure of the human and canine cricothyroid and
thyroarytenoid muscles for biomechanical applications.
The injection was aimed deep into the
thyroarytenoid muscle (a depth of 2-3 mm) using a 19-gauge syringe (Micro-France[R], St.
Changes in the
thyroarytenoid muscle with aging consist of a loss in muscle mass, a change in innervation, reduced blood flow, and metabolic and hormonal changes.
Such findings are consistent with a research which showed that training through phonation into a tube promotes activation of the
thyroarytenoid, cricothyroid and lateral cricoarytenoid muscles 14.
This may have been due to the effects of SES on the
thyroarytenoid muscle via the stimulation of the ISLN, lowering the frequency of voice.
Botulinum toxin A (1.5-4 units) was injected into
Thyroarytenoid muscle bilaterally under EMG guidance.
Thyrohyoid muscle is attached in front of thyroid cartilage, and at its posterior,
thyroarytenoid muscle pulls the arytenoid cartilage anteriorly.
Hussain and Shakeel (2010) conducted a study in Scotland on selective lateral laser
thyroarytenoid myotomy for adductor spasmodic dysphonia.