Feasibility of Endoscopic Treatment of Middle Ear Myoclonus: A Cadaveric Study
Table 1
Results of temporal bone endoscopic stapedius transection
Temporal bone number
Previous mastoidectomy
Stapedius tendon visible with 0° scope
Stapedius tendon visible with 30° scope
Scutum curetting or canal drilling necessary
Comments
(1) Left
Yes
Yes
Yes
No
(2) Right
Yes
Yes
Yes
No
(3) Left
Yes
Yes
Yes
No
Stapedius tendon was transected bluntly with a Wullstein needle. This resulted in unintended incudostapedial joint separation A prominent anterior canal bulge made the scope insertion and endoscopic guided insertion of instruments slightly more challenging but procedure was still completed using a 2.7 mm diameter scope
(4) Left
Yes
Yes
Yes
No
(5) Right
Yes
Yes
Yes
No
(6) Right
Yes
No
No
No
The stapedius tendon was absent because the facial recess had been previously drilled
(7) Right
Yes
Yes
Yes
No
(8) Left
No
Yes
Yes
No
(9) Right
No
Yes
Yes
No
(10) Left
No
Yes
Yes
No
A prominent anterior canal bulge and narrow ear canal made the scope insertion and endoscopic guided insertion of instruments challenging Procedure was completed using a 1.9 mm diameter scope
