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Arthritis or another medical condition could be the cause of a stiff knee. Overuse of the joints and muscles in your knee can also cause stiffness. Strengthening your hamstrings, quadriceps and other knee-supporting muscles protects your knees from stress and the shock of impact, according to American Academy of Orthopaedic Surgeons. Stretching your muscles improves flexibility, which can prevent stiffness and injury.
These types of gel knee pads are one of the best knee pads to use if you have to kneel a lot and you experience knee pains because the gel spreads out the force the knee gets when you kneel that way preventing one part of your knee wearing down faster and hurting more.