Think of walking in stiff, hard shoes both without socks. Or, if said shoes are handy, do so. While socks provide cushioning (and contain odor), you'll notice they also provide a buffer to absorb the friction that would occur if the shoe rubbed up against your skin.
Without the sock, your exposed skin would rub against the shoe, get irritated, blister, and become inflamed. It's the same concept with your joints. As you lose your internal sock-meaning as that slippery, shock-absorbing cartilage between your bones thins--bones lose their ability to slide and they can rub directly against each other.
When that happens, the effect is like stick on stick-and it hurts. In simple form, that's what osteoarthritis is. It's a condition in which the cartilage that covers the bones and forms the surface of the joints becomes thinner, rougher, and less protective of the bone, so the bones grind against each other, and the joint becomes inflamed.
It's painful and makes walking-or any kind of moving-difficult. Osteoarthritis can occur in any of your joints, including your hands, hips, and spine, and your knees-which can be most troublesome. In fact, 85 percent of us who reach age 85 will have knee osteoarthritis if we don't do something to prevent it.
Unlike osteoporosis, osteoarthritis is a disease that you will feel-often-in the form of mild to severe pain, creaking, or swelling and stiffness in your joints. Many things can make osteoarthritis more likely, including bad posture, overuse, heredity, obesity, lack of calcium, and lack of vitamin D and vitamin C. Luckily, you can prevent progression of the osteoporosis, and even reverse it, by following the right anti-aging guidelines.
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