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

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.