Thermographic changes in chronic low back pain under physiotherapeutic treatment: controlled and randomized clinical trial

Abstract

Objective: To analyze the thermographic changes in patients with chronic low back pain under different physical therapy interventions. Method: Thirty three chronic low back pain individuals were randomized into four groups: manual therapy (MTg; n=10), lumbar stabilization (LSg; n=7); combined therapy – MT + LS (CTg; n=7) and postural orientation/control (PGg; n=9). All individuals underwent ten physiotherapy sessions and evaluated pre- and post-treatment as skin temperature (infrared thermography), and pain in the lower back (Visual Analogue Scale – VAS). Anova (4x3x2) comparing four groups, three areas (LLA, CA and RLA) and two evaluations (pre- and post-treatment) for skin temperature; and Anova (4x2) between the four groups, pre- and post-treatment, were used for VAS, considering α≤5%. Results: There was no significant difference in lower back temperature, comparing pre- and post-treatment; however, the VAS showed a significant reduction for all groups (P≤0.01). Conclusion: Although the treatments have not minimized the temperature in the lumbar region, they were able to decrease dramatically the level of pain, in all groups.