Cod Liver Oil Phonophoresis as a Non-Invasive Intervention for Chronic Knee Osteoarthritis
Abstract
Objective: Osteoarthritis is a degenerative joint disorder affecting millions of older people worldwide. Conventional treatments include the use of oral NSAIDs, which can cause potential complications like stomach ulcers, gastrointestinal bleeding, and other digestive problems. Identifying an alternative natural anti-inflammatory drug, such as cod liver oil, which can be delivered transdermally by phonophoresis, reducing the potential complications of oral drug administration, was the primary requirement of the study.
Material and Methods: This cross-sectional study included 60 participants selected from Saveetha Medical College and Hospital and other rehabilitation centers, based on defined inclusion and exclusion criteria. They were divided into two groups: one received cod liver oil phonophoresis and the other conventional ultrasound. Treatment spanned five days per week over four weeks, with each session lasting 8 minutes. Baseline and week 4 assessments included pain intensity (Numerical Pain Rating Scale) and functional capacity (Six-minute walk test). Data were analysed using paired and independent t-tests with significance set at p-value<0.005.
Results: Both groups demonstrated statistically significant reductions in pain intensity and functional limitation scores. However, the phonophoresis group showed greater reductions in NPRS scores (mean decrease 3.83 vs. 2.40; p-value<0.001) and superior gains in 6MWT distance (mean increase 21.97 m vs. 10.62 m; p-vaue<0.001) compared to the ultrasound group. Increased knee flexion ROM and patient satisfaction scores also favored the phonophoresis group.
Conclusion: Cod liver oil phonophoresis is an effective, non-invasive intervention for reducing pain and functional limitations in chronic knee osteoarthritis. Its natural composition and safety profile make it a promising alternative or adjunct to traditional pharmacological treatments.
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