ANSWER AND REASONINGD. Compare bone-conduction and active middle-ear implant options after aided testing and anatomical imaging
Implant selection is mechanism- and anatomy-led; formal aided assessment and imaging allow a defensible comparison rather than choosing by headline audiogram severity.
Why every option is right or wrong
A. Repeat conventional air-conduction aid fitting only: Occlusion and recurrent otorrhoea have already made this route poorly tolerated.
B. Cochlear implantation solely because hearing is severe: Adequate cochlear reserve and a large conductive component require comparison with bone-conduction or active middle-ear options first.
C. No amplification can work after canal-wall-down surgery: Several implantable pathways can bypass the problematic ear canal.
D. Compare bone-conduction and active middle-ear implant options after aided testing and anatomical imaging: Choice depends on cochlear thresholds, speech benefit, cavity status, anatomy, skin/bone factors and patient goals.
E. Implant into an actively infected cavity: Implantation should not proceed through uncontrolled infection.
What if the scenario changed?
If bone-conduction thresholds had deteriorated beyond device limits with poor aided speech understanding, cochlear implantation might become the more appropriate pathway.