This causes problems. In fact, 1 in 3 people will experience knee pain, which may eventually rob them of their mobility and freedom.
Healthy knees usually have cushioning and lubrication between the joints. This allows the bones in your knees to glide smoothly like a well oiled machine.
However, after years of walking, running, bending down and other movements, this cushioning wears away. And the lubricant that makes sure your joints glide dries out like a lake in a drought.
What you’re left with are exposed, ‘crumbly’ knee joints that rub and grind against each other — making them more like old chalk than bone.