Look inside the Joint
Your hips are the largest weight bearing joints in your body. The hip joint consists of two parts: the hip socket and the rounded "ball" at the top of the thighbone that fits into it. Smooth, glossy cartilage covers the two bone surfaces where they meet, providing a cushion for ease of motion.
Every time you take a step the "Ball" at the top of the femur moves around in its smooth fitting "house". Range of motion is vast, but also the pain can be if the cartilage is warn or damaged. Damaged cartilage can lead to various forms of arthritis.
When the cartilage thins out and breaks down, unprotected bone surfaces rub against each other and cause extreme pain.
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