Surgery
All the operations in this study were performed under local infiltration
under general anesthesia with 2% lidocaine and epinephrine (1:
100,000), in which Karl Storz (4 mm diameter, 18 cm long) rigid
endoscope (0, 30, 45) and Zeiss operating microscope were used to study
each group.
Penetration of postaural and canal, dissection of postaural sulcus of
arched postaural incision flap, cutting of musculoperiosteal flap and
bone canal in the latter half of contact, exposure and standard harvest
of fascia of temporal muscle, detached skin canal measured from 12
o’clock to 6 o’clock position, and a front extended open attic area are
all surgical technical contents of MES group. The whole range of
cholesteatoma can be observed by gastrostomy with drill bit. To observe
whether there is residual cholesteatoma matrix in attic area after
cholesteatoma resection, we can observe it directly with or without a
mirror. Relocation of the tympanic membrane flap can be performed with
the support of the perichondrium, provided that the cartilage removed
from the tragus reconstructs the attic (Figure 2). Osteoplasty can be
performed with prosthesis when the ossicles are destroyed.
The technique of holding the endoscope in the left hand and cutting the
skin along the tympanic membrane ring at 6 o’clock and 12 o’clock for
EES group operation; The symptoms of bleeding can be controlled by
cotton gauze. A pubic facetomy can be performed. Scrapers or gouges and
mallets. Check the upper attic area after cholesteatoma resection, and
use 0 and 30 endoscopy. The tympanic membrane flap was repositioned
after rebuilding the attic through cartilage (Figure 3). Osteoplasty can
be performed with prosthesis when the ossicles are destroyed.