The characteristics of pain in patients with osteoarthritis mainly manifest as pain occurring frequently in the morning, which lessens after activity. However, if the activity is excessive, the pain can worsen. Another symptom is joint stiffness, which often occurs when getting up in the morning or after the joint has been in a certain position for a long time during the day. The affected joint may show symptoms such as swelling, pain, and a feeling of friction during movement. In severe cases, patients may experience muscle atrophy and joint deformity. Patients with osteoarthritis should pay attention to rest and avoid vigorous activities. They should use anti-inflammatory and analgesic drugs, as well as drugs that nourish the cartilage, to improve symptoms. When conservative treatment is ineffective and joint deformity or functional impairment occurs, joint replacement surgery may also be considered as a treatment option.