7. Tenderness or Knee Swelling
One of the most common signs of arthritis, as the knee contracts with the disease, it will immediately become inflamed. This inflammation will result in what is known as “soft swelling” as extra fluid begins to surround the area around the joint. This swelling is largely, as the name implies, quite soft and feels like pushing into a slight bubble.
As arthritis progresses and eats at the cartilage, bone spurs will appear causing what is known as “hard swelling”.