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Movement-related variation in forces under compression stockings
D Wertheim1, J Melhuish, R Williams
1Department of Surgery, University of Wales College of Medicine, Cardiff, U.K.
Summary
Compression therapy forces under stockings vary with foot movement. This study developed a system to measure these dynamic compression forces, aiding understanding of treatment efficacy for venous leg ulcers.
Area of Science:
- Biomedical Engineering
- Vascular Medicine
- Biomechanics
Background:
- Compression therapy is a standard treatment for venous leg ulcers.
- The effectiveness of compression therapy can vary significantly among patients.
- Understanding the dynamic forces involved in compression therapy is crucial for optimizing treatment.
Purpose of the Study:
- To develop and validate a system for measuring forces beneath compression stockings during limb movement.
- To investigate how dorsiflexion, plantar flexion, and walking affect compression forces.
- To enhance the understanding of compression therapy's mechanism of action.
Main Methods:
- Three pressure sensors were applied to the medial aspect of the left leg in six healthy volunteers.
- Measurements were taken under class 2 compression stockings.
- Data were collected during active dorsiflexion and plantar flexion, and during short walking trials.
Main Results:
- Significant, position-dependent pressure changes were recorded during foot dorsiflexion and plantar flexion.
- Walking also induced variable, position-dependent pressure fluctuations.
- The developed system successfully captured dynamic force variations.
Conclusions:
- The developed system effectively measures forces under compression stockings during movement.
- Foot and ankle movements demonstrably alter pressure distribution.
- These findings provide insights into the variable efficacy of compression therapy and its mechanism of action.