Osteoarthritis: Symptoms, Causes and Treatment

Osteoarthritis is a joint condition in which cartilage and nearby tissues change over time, causing pain, stiffness and reduced movement.

Osteoarthritis is a condition affecting the tissues within and around a joint. The smooth cartilage that helps joint surfaces move can become thinner or uneven, while the bone and joint lining may also change. It commonly involves the knees, hips, hands or spine, although other joints can be affected. Osteoarthritis may develop gradually and can range from mild symptoms to movement that is substantially limited.

The condition is not simply a normal part of getting older. A clinician can help distinguish it from inflammatory arthritis, an injury or another cause of joint pain.

Osteoarthritis commonly presents with Joint Pain, Joint Stiffness, Joint Swelling, Morning Joint Stiffness and Reduced Range of Motion. Pain may be more noticeable during weight-bearing, gripping or repeated use, and may ease with rest. Stiffness can follow inactivity, such as sitting for a while or getting up in the morning. A joint may feel enlarged, tender or less flexible, and some people notice grating or clicking during movement.

Osteoarthritis develops when the balance between joint stress and tissue repair changes over time. Cartilage can lose its smooth, resilient structure, and the joint may respond with changes in the bone, lining and supporting tissues. Previous injury, altered joint alignment or repeated loading can contribute. In some people, several influences are involved rather than one single cause.

Symptoms can fluctuate. A joint may feel better during one period and more painful or stiff during another, especially after a change in activity. Progression is individual and is not determined by an X-ray alone; the effect on walking, sleep, work and self-care also matters. Early support can help preserve movement and make daily tasks more manageable.

Risk factors include increasing age, a previous joint injury, repeated physical loading, joint shape or alignment, family tendency and higher body weight placing extra load on weight-bearing joints. These factors do not make osteoarthritis inevitable. A history of surgery or an earlier joint condition may also affect how a joint functions.

Assessment usually combines your symptom history with an examination of the joint. The clinician may check tenderness, swelling, alignment, strength and how far the joint moves. Imaging can show structural changes when needed, but blood tests or other investigations may be used when symptoms suggest a different condition. Tell the clinician about injury, fever, sudden swelling or symptoms in several joints.

Treatment is tailored to the joint involved, symptom pattern and goals. Exercise Therapy and Physiotherapy can build strength, improve balance and support joint movement. Weight Management for Joint Pain may reduce load on weight-bearing joints. Medicines, including Anti-Inflammatory Medication, may be considered after reviewing your health and other medicines. Cortisone Injection or Hyaluronic Acid Injection may be discussed for selected joints. Surgery is considered when persistent symptoms continue to limit function despite non-surgical care.

Break demanding tasks into smaller periods and change position regularly. Supportive footwear, walking aids or adapted equipment may help when a lower-limb or hand joint is affected. A physiotherapist can show you how to pace activity without avoiding movement altogether. Keep a record of triggers, helpful activities and changes in function so appointments focus on practical goals.

Pain and stiffness can reduce activity, strength and confidence, which may make everyday movement harder. A painful joint can also alter how you walk or use another limb, placing extra demand on nearby areas. Seek prompt medical assessment for a suddenly hot, very swollen joint, a new inability to bear weight, or severe pain after an injury.

Not every case can be prevented, but regular strengthening, varied movement and recovery between demanding activities can support joint function. Treating injuries properly and addressing persistent changes in gait or alignment may reduce repeated stress. Gradual activity changes are usually easier for a painful joint than sudden increases in load.

Consider an orthopedics or physiotherapy assessment when pain, stiffness or reduced movement persists, interferes with sleep or limits work and self-care. Bring details about when symptoms began, which activities affect them and any earlier injury. A specialist can clarify the diagnosis and match treatment to the joint and your goals.