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Related Experiment Videos

The cold foot symptom in sciatica. A clinical and thermographic study

R V Lindholm, T Myllylä, J Sarvaranta

    Annales Chirurgiae Et Gynaecologiae
    |January 1, 1981
    PubMed
    Summary

    Thermography can help diagnose sciatica. Decreased limb temperature indicates spinal nerve root compression, especially in herniated disc cases, with temperature normalization post-surgery correlating to symptom relief.

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    Area of Science:

    • Neurology
    • Medical Imaging
    • Pain Management

    Background:

    • Sciatica is a common condition characterized by pain radiating along the path of the sciatic nerve.
    • Accurate diagnosis of the underlying cause, such as spinal nerve root compression or herniated disc, is crucial for effective treatment.
    • Peripheral vasomotor control mechanisms are not fully understood.

    Purpose of the Study:

    • To investigate the correlation between distal limb temperature and spinal nerve root compression in sciatica patients.
    • To assess the diagnostic value of thermography in identifying herniated discs.
    • To evaluate the relationship between postoperative temperature changes and symptom resolution.

    Main Methods:

    • A thermographic study was conducted on 174 hospital patients diagnosed with sciatica.
    • Distal limb temperatures were measured on admission.
    • Follow-up thermograms were performed on 30 patients postoperatively.

    Main Results:

    • A significant correlation was found between decreased distal limb temperature and the probability of spinal nerve root compression.
    • The strongest association between "coldness" and nerve compression was observed in patients with surgically confirmed herniated discs.
    • Postoperative thermograms showed a correlation between normalized limb temperature and symptom relief.

    Conclusions:

    • Thermography is a valuable tool for assessing spinal nerve root compression in sciatica.
    • Reduced limb temperature is a potential indicator of herniated discs.
    • Temperature normalization post-surgery suggests successful decompression and symptom improvement, highlighting the role of neurophysiological mechanisms in peripheral vasomotor control.

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