The cricoarytenoideus lateralis muscle (CALM) is an adductor of the arytenoids and, although not directly involved in the pathogenesis of recurrent laryngeal neuropathy as the abductor cricoarytenoideus dorsalis muscle (CADM) does, it is the first to experience a neurogenic atrophy. On thirty geldings and thirty females standardbred horses weighing about 500 kg and aged between 3 and 9 years an ultrasound examination of the larynx was performed, in order to assess shape, size and echogenicity of CALMs. The mean width, thickness and area of the muscle were respectively 1.42 cm, 1.23 cm and 1.36 cm2 for the right side and 1.40 cm, 1.21 cm and 1.34 cm2 for the left side. No differences have been found in relation to sex, age or between right and left muscle. Focal calcifications of thyroid cartilage prevented visualization of the muscles, especially in females.
Ultrasonographic evaluation of cricoarytenoideus lateralis muscle in standardbred horse
LAUS, Fulvio;PAGGI, EMANUELE;CERQUETELLA, Matteo;TESEI, Beniamino
2012-01-01
Abstract
The cricoarytenoideus lateralis muscle (CALM) is an adductor of the arytenoids and, although not directly involved in the pathogenesis of recurrent laryngeal neuropathy as the abductor cricoarytenoideus dorsalis muscle (CADM) does, it is the first to experience a neurogenic atrophy. On thirty geldings and thirty females standardbred horses weighing about 500 kg and aged between 3 and 9 years an ultrasound examination of the larynx was performed, in order to assess shape, size and echogenicity of CALMs. The mean width, thickness and area of the muscle were respectively 1.42 cm, 1.23 cm and 1.36 cm2 for the right side and 1.40 cm, 1.21 cm and 1.34 cm2 for the left side. No differences have been found in relation to sex, age or between right and left muscle. Focal calcifications of thyroid cartilage prevented visualization of the muscles, especially in females.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
