Liquid crystal thermography. A new tool for evaluating low back pain

Area of Science:

• Medical Imaging
• Thermography
• Pain Management

Background:

• Low back pain affects numerous individuals, necessitating effective diagnostic tools.
• Current diagnostic methods for low back pain may not always pinpoint soft tissue trauma.
• Liquid crystal thermography offers a non-invasive method to assess skin temperature variations.

Purpose of the Study:

• To investigate the utility of liquid crystal thermography in detecting skin temperature patterns associated with low back pain.
• To compare thermographic findings between patients with different causes of low back pain and healthy controls.

Main Methods:

• Liquid crystal thermography was employed to measure low back skin temperature in 62 patients with low back pain and 22 pain-free volunteers.
• Patients were categorized into groups based on diagnoses: degenerative discogenic lesions, acquired lesions, congenital/developmental lesions, and unknown causes.
• Skin temperature and temperature gradients were analyzed and compared between groups.

Main Results:

• No significant differences in average equilibrated thermogram temperatures were observed between control and patient groups.
• Patients with discogenic lesions and acquired lesions exhibited significantly greater temperature gradients compared to pain-free subjects (p < .05).
• Eighty percent of patients with low back pain showed elevated skin temperatures correlating with tenderness to palpation.

Conclusions:

• Liquid crystal thermography demonstrates potential as a valuable tool for identifying localized soft tissue trauma in patients experiencing low back pain.
• The increased temperature gradients observed in specific patient groups suggest thermography's capability to differentiate certain pain etiologies.
• Further research could validate liquid crystal thermography for routine clinical use in diagnosing low back pain.