Osteoarthritis of the knee is usually a slowly progressive degenerative disease where the joint cartilage gradually wears away. Because it progresses over time it most often affects older people.
Knee Osteoarthritis usually occurs from the following:
- Previous knee injury
- Repetitive strain on the knee
- Problems with the bone layer underneath the cartilage
- Obesity
- Fractures
- Ligament tears
- Meniscal injuries, which can affect alignment and cause tearing in the cartilage
Symptoms typically increase over a period of years. However, the primary symptoms of knee osteoarthritis are mild to severe pain, localized swelling, stiffness, and limited range-of-motion in the knee.