MORPHOLOGICAL ACCOMMODATIONS FOR POLIOMYELITIS DIGITAL DEXTERITY LIMITATIONS
This 88 year old male patient presented with a mild-moderate, sloping bilateral sensorineural loss of hearing with 84% PB Max. The patient set the caring family an ultimatum regarding cosmetic considerations for hearing aid acceptance. A compromise was reached with a half-concha configuration. Significant limitations in digital dexterity were the consequence of contractures associated with childhood poliomyelitis.The recommended aid contained an input compression circuit with a number of morphological accommodations to facilitate independent use. These features included A) set screw CIC-type volume control B) easy access or "training" battery compartment C) CIC-type extraction tab. An A13 battery was specified for maximum life and ease of manipulation. The aid was contoured to fill the cavum concha to minimize insertion orientation error.Video otoscopy was employed to demonstrate hearing instrument insertion, removal, hygiene and battery replacement.