Osteoarthritis – Causes, Symptoms and Treatment
Osteoarthritis is a degenerative joint disease in which cartilage gradually breaks down, causing pain, stiffness, and reduced mobility in affected joints.
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Osteoarthritis is a degenerative joint disease in which cartilage gradually breaks down, causing pain, stiffness, and reduced mobility in affected joints.
What Is Osteoarthritis?
Osteoarthritis (OA) is the most common form of arthritis and a leading cause of chronic pain and disability worldwide. It is characterized by the progressive breakdown of articular cartilage – the smooth tissue that covers the ends of bones within a joint. As cartilage deteriorates, bones begin to rub against each other, resulting in pain, swelling, and stiffness. The joints most commonly affected include the knees, hips, hands, and spine.
Causes and Risk Factors
Osteoarthritis is a multifactorial disease influenced by several contributing factors:
- Age: The risk increases significantly with age as cartilage loses its resilience over time.
- Obesity: Excess body weight places additional mechanical stress on weight-bearing joints such as the knees and hips.
- Genetics: A family history of osteoarthritis increases individual risk.
- Previous joint injuries: Fractures, ligament tears, or meniscal injuries can predispose a joint to early-onset OA.
- Occupational stress: Repetitive joint loading from certain jobs or activities raises the risk.
- Sex: Women are more likely to develop OA than men, particularly after menopause.
- Muscle weakness: Reduced muscular support around a joint increases the load on cartilage.
Symptoms
Osteoarthritis symptoms typically develop gradually and may worsen over time:
- Joint pain – particularly during or after movement or physical activity
- Morning stiffness – usually lasting less than 30 minutes after waking
- Joint swelling and tenderness
- Crepitus – a grating, crackling, or popping sensation during joint movement
- Reduced range of motion and joint flexibility
- Bony enlargements at finger joints (known as Heberden or Bouchard nodes)
Diagnosis
The diagnosis of osteoarthritis is based on a combination of clinical assessment, patient history, and imaging studies:
- Physical examination: Evaluation of joint tenderness, swelling, and range of motion
- X-rays: Reveal hallmark features such as joint space narrowing, osteophytes (bone spurs), and subchondral sclerosis
- MRI (Magnetic Resonance Imaging): Provides detailed visualization of cartilage, soft tissue, and early-stage changes
- Blood tests: Used to exclude other forms of arthritis such as rheumatoid arthritis
Treatment
While there is currently no cure for osteoarthritis, effective management can significantly reduce symptoms and slow disease progression. Treatment goals include pain relief, maintaining joint function, and improving quality of life.
Non-Pharmacological Treatment
- Physical therapy: Targeted exercises to strengthen the muscles supporting the affected joint
- Weight management: Reducing excess body weight substantially decreases joint load
- Low-impact exercise: Activities such as swimming, cycling, and walking help maintain joint mobility
- Assistive devices: Braces, canes, or orthopedic footwear to offload joints
- Heat and cold therapy: Useful for day-to-day pain and stiffness management
Pharmacological Treatment
- Analgesics: Acetaminophen (paracetamol) or nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or naproxen
- Corticosteroid injections: Intra-articular injections for acute inflammatory flares
- Hyaluronic acid injections: To supplement joint lubrication and reduce friction
Surgical Treatment
- Arthroscopy: A minimally invasive procedure to clean or smooth the joint surface
- Osteotomy: Realignment of the bone to redistribute joint stress
- Joint replacement (arthroplasty): Total or partial replacement of the joint, most commonly the knee or hip, in advanced cases
Prognosis and Quality of Life
Osteoarthritis is a chronic, progressive condition; however, with appropriate treatment and lifestyle modifications, many people manage their symptoms effectively and maintain an active life. Early diagnosis and a proactive treatment approach are key to preserving joint function and slowing disease progression.
References
- Lozada CJ. Osteoarthritis. In: Firestein GS, Budd RC, Gabriel SE, et al. (eds.). Kelley and Firestein's Textbook of Rheumatology. 10th ed. Elsevier; 2017.
- World Health Organization (WHO). Osteoarthritis. Available at: https://www.who.int/news-room/fact-sheets/detail/osteoarthritis (2023).
- Kolasinski SL, et al. 2019 American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee. Arthritis Care and Research. 2020;72(2):149-162.
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Related search terms: Osteoarthritis + Osteoarthrosis + Degenerative Joint Disease