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J Neurol Neurosurg Psychiatry 65:743-747 doi:10.1136/jnnp.65.5.743
  • Paper

Measuring vibration threshold with a graduated tuning fork in normal aging and in patients with polyneuropathy

Table 1

Normal vibration threshold values (5% lower limit) in healthy controls (with the Rydel-Seiffer tuning fork)

For the upper extremities For the lower extremities
Age (y) Values Age (y) Values
⩽40 ⩾6.5 ⩽40 ⩾4.5
41–85 ⩾6.0 41–60 ⩾4.0
>85 ⩾5.5 61–85 ⩾3.5
>85 ⩾3.0
  • Sites of examination: dorsum of the distal interphalangeal joint of the index finger, the ulnar styloid process, dorsum of the interphalangeal joint of the hallux ,and the internal malleolus.

  • Values are 0–8; the vibration threshold values are presented in rounded numbers.

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