You cannot fully extend the knee. Pain, swelling, and inflammation after acute injuries can all make knee range of motion difficult. If a patient comes to my office days after an injury and I canât straighten the knee, I get at least a little concerned. It can be a nonspecific finding, though.
Arthritis is very common but is not well understood. Actually, âarthritisâ is not a single disease; it is an informal way of referring to joint pain or joint disease. There are more than 100 different types of arthritis and related conditions.People of all ages, sexes and races can and do have arthritis, and it is the leading cause of disability in America.steoarthritis is the most common type of arthritis. When the cartilage â the slick, cushioning surface on the ends of bones â wears away, bone rubs against bone, causing pain, swelling and stiffness.
Arthritis facts. 1  Arthritis is inflammation of one or more joints. 2  Symptoms of arthritis include pain and limited function of joints. 3  Arthritis sufferers include men and women, children and adults.4  A rheumatologist is a medical arthritis expert.rthritis facts. 1  Arthritis is inflammation of one or more joints. 2  Symptoms of arthritis include pain and limited function of joints. 3  Arthritis sufferers include men and women, children and adults. 4  A rheumatologist is a medical arthritis expert.