Osteoarthrosis (osteoarthritis) is a chronic degenerative disease with an unknown cause. The disease affects the joint’s cartilage and the bone under the cartilage. The joints most affected during osteoarthritis are the joints that are under greater physical pressure (knees, hips and spine). Painkillers are used to temporarily relieve the pain. Hondroitin sulfate and hialuronic acid can be injected locally into the joint’s cavity to help regenerate cartilage. Physical therapy is also used in the treatment of osteoarthritis. Joint replacement is the final option for treating osteoarthritis and it is a very efficient treatment, although the recovery time is often several months up to a half a year.