m'queen's operation for conchal hematoma 431 



Fourth Step. — Suturing the Edges.— The edges of the s.dn 

 of each side are united to each other separately (Fig. 220). 

 The suturing begins on the internal surface owing to the fact 

 that the convexity renders the edges of skin rather inaccessi- 

 ble after the external flaps have been closed. 



The suturing is effected by means of closely placed inter- 

 rupted sutures adjusted so as to positively prevent infolding 

 of the edges, which accident would prevent union. The ex- 

 ternal flaps are then united in the same manner. 



Fifth Step. — Dressing. — The part is rinsed with an anti- 

 septic solution, dried, dusted along the sutures with iodoform, 

 and then coated over with several thick layers of collodion. 



AFTER-CARE. — If the patient shows any inclination 

 to rub the ear against the manger, it is tied on the pillar reins. 

 No dressing is required until the eighth day, at which time 

 the collodion is teased off and the sutures inspected. If union 

 of the edges seems safe they are removed. 

 1 



McQueen'^ Operation for Conchal Hematoma. 



DEFINITION. — A method of applying futures through 

 the concha for the purpose of obliterating the sac and en- 

 couraging cicatrization of traumatic sanguineous sac of the 

 ear. 



INDICATIONS.— The ears of both the dog and the cat 

 are susceptible to the development of an exceedingly refract- 

 ory sanguineous or serous sac located upon the. internal and 

 sometimes on both sides of the concha. It is caused by vio- 

 lence that provokes the accumulation of blood or serum be- 

 neath the perichondrium, and since cartilage is little inclined 

 to undergo any active regenerative process the sac persists 

 by re-filling as often as the contents are evacuated, until 

 finally a marked distortion of the cartilaginous tissue results. 

 Repeated evacuation by aspiration or lancing with or without 

 antiseptic irrigations, is seldom successful, and spontaneous 

 recovery is rare. Injections of tincture of iodine, adrenalin, 

 and strong astringents have been recommended, but the re- 

 sults are seldom satisfactory. The method of McQueen, 

 herewith described, is the most effectual treatment against 

 this obstinate condition: 



TECHNIQUE. — The hair covering the area affected is 

 clipped and shaved internally and externally, and the surface 

 is washed with a potent antiseptic. The content of the sac 

 is then evacuated through a liberal incision located at the 

 most dependent part. Then a series of interrupted sutures 



