Which frequency tuning fork is preferred for routine clinical tuning fork tests, and why?

• A 512 Hz, because lower forks produce vibratory (tactile) sensation felt through bone ✓
• B 256 Hz, because it best tests speech-frequency hearing
• C 1024 Hz, because it minimizes ambient noise interference
• D 128 Hz, because it gives the longest duration of vibration

Explanation

The 512 Hz fork is standard because frequencies of 256 Hz and below generate strong tactile vibration that the patient may feel through skin and bone rather than hear, producing spurious results on Rinne and Weber tests. Forks above 512 Hz decay too quickly and are less useful clinically. This tactile artifact is the single fact that eliminates option B.

Reference: Dhingra's Diseases of Ear, Nose and Throat, 8th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.