LAEYNGOTOMY ARYTENECTOMY. 



473 



Fig. 415.— 3(f Ste2} b, Dissection of the Arytenoid at its Inferior Border and 

 its External Face. 



Cricoid. — Eaised and immobilized with a strong forceps, or the 

 hook forceps, held with the left hand, the arytenoid is separated 

 from without inward near its postero-superior angle, the articu- 

 lar, with the blimt bistoury. Held in a vertical direction, or some- 

 what obHquely downward and forward, the bistoury is moved to- 

 ward the external part of the arytenoid, immediately in front of 

 the cricoid, and the section is made by a limited and careful saw- 

 ing motion. "WTaen the arytenoid is partially ossified, which is a 

 condition encountered in nearly one half of the patients, some 

 force may be used. A feeling of cessation of resistance, and an 

 increased mobility of the cartilage, indicates the completion of the 

 section. 



(d) Dissection of the Cartilage by its Siq^erior Face (Fig. ilTV 

 — This is done with the curved scissors. The cartilage being weU 



