Rinne's test

Rinne's test

• is named after Adolf Rinne of Gottingen, who described this test in 1855 (1)
• it compares the patients ability to hear a tone conducted via air and bone - the mastoid process.
• the base of a vibrating 512Hz tuning fork is first placed on the mastoid process and then after the sound is no longer appreciated the vibrating top is held one inch from the external auditory meatus (1)
• the patient is asked whether the sound is louder behind or in front - referring to bone and air conduction respectively
  • normally the note is audible at the external meatus
    • when nerve deafness is present then the note is audible at the external meatus, as air and bone conduction are reduced equally, so that the air conduction is better (as is normal) than bone conduction - this is termed Rinne-positive
    • Rinne-negative occurs with a conductive hearing loss - no note is audible at the external meatus (i.e. bone conduction is better than air conduction)

Note: the following should be observed:

• strike the tuning fork against the knee or the elbow, not the table, otherwise the vibrations will be excessive and cause the patient discomfort
• hold the fork for 2-3 seconds to allow sufficient time to make a mental note of the stimulus intensity

Click here for video showing Rinne and Weber testing

Reference:

• (1) Hearing testing. American Hearing Research Foundation.2002