£90.00
This pathological version of Bone 3 presents the surgeon with an attic perforation and a cholesteatoma of indeterminate extent. Thus he/she must choose and carry out the most appropriate procedure, be it atticotomy, intact canal wall or open cavity surgery.
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The second photo shows an atticotomy with the head of malleus, the incus, the horizontal part of the facial nerve and cholesteatoma remnants lateral and medial to the ossicles and extending into the antrum.
The third photo shows a Bone 3 with a modified radical mastoidectomy. Can you identify the head of the stapes, the promontory, round window niche, horizontal part of the facial nerve, procesus cochleariformus, lateral semicircular canal, skin of external auditory canal and tympanic membrane (folded), mastoid cavity, middle fossa plate, sinodural angle, sigmoid sinus, facial “ridge,” mastoid cells?
The fourth photo shows a typical selection of instruments needed to operate on Pettigrew bones.
