Citrus foods like limes and lemons contain Vitamin C. Research shows getting the right amount of that Vitamin C aids in preventing inflammatory arthritis and maintaining healthy joints. Avocados contain polyhydroxylated fatty alcohols (PFAs), which are known anti-inflammatory compounds. Studies have shown that fatty acids found in avocado blocks the production of inflammatory mediators by the chondrocytes, macrophages and other specialized cells activated by the immune system thus decreasing the inflammation and damage to the cartilage of bones.