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Neurothesiometer vs Monofilament

Discussion in 'Diabetic Foot & Wound Management' started by AALang, Dec 7, 2006.

  1. AALang

    AALang Member


    Members do not see these Ads. Sign Up.
    I've had a few conflicting results when testing for neuropathy.
    Typically a patient is well aware of 10g monofilament, but has Neurothesiometer readings of over 25mV.
    This only happens occasionally but is an interesting anomaly.
    Your opinions please.
     
  2. Craig Payne

    Craig Payne Moderator

    Articles:
    8
    Its not an anomaly - they are measurng different things. Typically in DM, vibration sensation is lost first, and is also affected by age.
     
  3. Admin2

    Admin2 Administrator Staff Member

  4. G Hicks

    G Hicks Member

    HI Allan ,
    Literature shows vibration perception diminishes with age . It is one of the first sensations to disappear in the diabetic foot. Some authors believe the hot-cold differentiation sensation goes first as it is a small fibre sensation. Vibration and pressure sensitivity are controlled by large fibres.
    gHicks
     
  5. Vibration

    Dear AA Lang

    My memory of the significance of vibration was that what you are measureing is the speed of nerve conduction. The Mylin (spelling?) sheaths around the nerve accelerate the conduction speed of the nerve. Demylination is one of the early forms taken by neuropathy. If the oscilations of the tuning fork (or Neurothesiometer if you have the cash) are too close together for the signals to reach the brain as discreet information packets, no vibration will be perceived.

    This is a different form of neuropathy than soft touch deficit.

    Regards
    Robert
     
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