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The tuning fork revisited.

C Liniger1, A Albeanu, D Bloise

  • 1Diabetes Treatment and Teaching Unit, University Hospital, Geneva, Switzerland.

Diabetic Medicine : a Journal of the British Diabetic Association
|December 1, 1990
PubMed
Summary
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The Rydel-Seiffer tuning fork effectively screens for diabetic foot injury risk by detecting vibration sensation loss. Scores of 4.0 or below indicate high vulnerability to ulceration.

Area of Science:

  • Neurology
  • Diabetology
  • Biomedical Engineering

Background:

  • Diabetic neuropathy commonly causes loss of protective sensation, increasing foot injury risk.
  • Early identification of vibration sensation impairment is crucial for preventing diabetic foot ulcers.

Purpose of the Study:

  • To evaluate the efficacy of the Rydel-Seiffer graduated tuning fork for identifying vibration sensation loss in diabetic patients.
  • To determine if tuning fork scores correlate with foot ulceration risk.

Main Methods:

  • Assessed vibration perception using the Rydel-Seiffer tuning fork in healthy subjects and diabetic patients.
  • Correlated tuning fork scores with thresholds from an electromagnetic instrument (Vibrameter).
  • Examined tuning fork scores in patients with ulcerated feet.

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Main Results:

  • Vibration perception declined with age in control subjects.
  • Diabetic patients showed significantly impaired vibration perception compared to controls (p < 0.001).
  • Tuning fork scores strongly correlated with Vibrameter thresholds (r = -0.90, p < 0.001).
  • 79% of ulcerated feet had impaired age-related sensation; 95% had a tuning fork score ≤ 4.0.

Conclusions:

  • The Rydel-Seiffer tuning fork is a suitable tool for screening vibration sensation loss.
  • Diabetic patients with a tuning fork score ≤ 4.0 are vulnerable to foot ulceration.