Osteoarthritis: Symptoms, Causes & Treatment

Osteoarthritis is the most common type of arthritis worldwide, occurring due to progressive wear of the smooth cartilage that covers the ends of bones. This wear causes bone-to-bone friction, leading to chronic pain, stiffness, and reduced range of motion. This condition affects millions globally and is a leading cause of mobility disability, especially in people over 50.

In Jordan and the Arab region, osteoarthritis prevalence is rising due to increasing obesity rates and aging populations. It commonly affects weight-bearing joints like the knees, hips, and spine, but can develop in any joint including fingers and shoulders. The disease is chronic and progressive, but early intervention and proper management can slow its progression and significantly improve quality of life.

Although there is currently no way to stop cartilage wear completely, a variety of conservative and surgical treatments are available to reduce pain, improve movement, and enhance flexibility. These include lifestyle modifications, medications, physical therapy, injections, and surgery for advanced cases.

Osteoarthritis symptoms develop gradually and vary from person to person depending on condition severity and affected joint. In early stages, some may not notice symptoms, but as the disease progresses, symptoms become more apparent. Women may experience more severe symptoms, especially after menopause, while older men may complain of severe morning stiffness.

• Joint pain: Pain that increases with movement and activity, improves with rest, ranging from mild to severe.
• Stiffness and rigidity: Difficulty moving the joint easily, especially in morning or after periods of inactivity.
• Swelling and inflammation: Redness and swelling around the joint, possibly accompanied by warmth in the area.
• Crackling or popping: Uncomfortable sounds when moving the joint from worn cartilage friction.
• Surrounding muscle weakness: Chronic pain leads to gradual weakness in muscles around the joint.
• Joint deformity: In advanced cases, the joint may change shape and become visually noticeable.
• Instability: Feeling that the joint will fail or slip during movement.
• Loss of flexibility: Gradual decrease in range of motion and flexibility.
• Nighttime pain: Patient may wake at night from pain, especially when trying to change body position.
• Difficulty with daily activities: Such as climbing stairs, sitting and standing, or opening doors and bottles.
• Fluid accumulation: Fluid may accumulate around the joint causing additional swelling.
• Post-activity pain: Pain increases in the hours following physical activity.

• Advanced age: Cartilage loses elasticity over time, and cartilage cells regenerate more slowly, increasing wear risk.
• Previous injuries: Joint fractures or sports injuries accelerate osteoarthritis development, even years after the initial injury.
• Joint overuse: Repetitive manual work or intense sports increase wear, particularly in specific joints.
• Obesity and excess weight: Additional weight puts increased pressure on joints, especially knees, hips, and lower spine.
• Muscle weakness: Weakness in muscles surrounding the joint causes instability and increases wear rate.
• Structural misalignment: Imbalance in bone alignment or limb length discrepancies increase joint stress.
• Other diseases: Conditions such as rheumatic fever or lupus may lead to secondary osteoarthritis.

• Biological sex (gender): Women are more prone to osteoarthritis, especially after menopause due to decreased estrogen.
• Age: Risk increases significantly after age 45, with severe cases more common after 65.
• Family history: Family history of osteoarthritis increases risk due to genetic factors.
• Obesity: Body mass index above 30 significantly increases development risk.
• Female biological sex: Women have 1.5 to 2 times higher incidence rates than men.
• Previous inflammatory diseases: Rheumatoid arthritis or gout increases development risk.
• Demanding occupations and activities: Jobs requiring heavy lifting or repetitive movements increase risk.
• Physical inactivity: Sedentary lifestyle weakens muscles and increases joint stress.
• Metabolic disorders: Diabetes and hypertension increase development risk.
• Hormonal factors: Hormonal imbalances may affect cartilage and joint health.

Diagnosis is based on a combination of clinical assessment and additional tests. The doctor will ask about medical history and symptoms, then examine the joint carefully. There is no specific blood test to diagnose osteoarthritis, but blood tests may be ordered to exclude other inflammatory diseases like rheumatoid arthritis. Imaging and laboratory tests confirm the diagnosis and determine the severity of wear.

• Clinical examination: Doctor examines the joint for swelling, pain, and range of motion, and listens for crackling sounds during movement.
• X-ray (X-ray): Shows narrowed space between bones and bone spur formation (Osteophytes). Presence of these changes confirms diagnosis.
• Magnetic Resonance Imaging (MRI): Provides detailed images of cartilage, soft tissues, and fluid around the joint, helpful for complex cases.
• Ultrasound (Ultrasound): Used to assess cartilage and accumulated fluid and to guide injections.
• Blood test: Doctor may order ESR and CRP to exclude other inflammatory diseases. Normal values: ESR <20 mm/h, CRP <10 mg/L.
• Synovial fluid analysis: In rare cases, a sample of fluid around the joint is taken for analysis and to exclude infection or other conditions.
• Severity assessment: Doctors classify the condition from grade 1 (mild) to grade 4 (very severe) based on images and symptoms.

Medications

• Pain relievers (Analgesics): Such as paracetamol (Tylenol) for mild to moderate pain, taken as directed by doctor with maximum 4 grams daily.
• Non-steroidal anti-inflammatory drugs (NSAIDs): Such as ibuprofen, naproxen, and diclofenac, reduce inflammation and pain but may cause stomach issues with long-term use.
• Topical creams: Creams containing pain relievers or anti-inflammatories applied directly to skin over affected joint.
• Cartilage supplements: Glucosamine and chondroitin may help maintain cartilage, but benefits are limited and effects vary between individuals.
• Alpha-2 adrenergic inhibitors (Duloxetine): Antidepressant that may be used for severe chronic pain, especially in knee osteoarthritis.

Procedures and Injections

• Hyaluronic Acid Injections: Injected directly into the joint to lubricate it and reduce inflammation. Usually given 3-5 injections one week apart. Results last 3-12 months.
• Platelet-Rich Plasma (PRP) Injections: Extracted from patient's blood and injected into joint to stimulate healing. May be effective for early to moderate cases.
• Corticosteroid Injections: Such as cortisol injections provide rapid pain and inflammation relief, but effect is temporary (lasting 3-6 weeks) and injection frequency is limited.
• Physical therapy and rehabilitation: Specific exercises and movements strengthen muscles around the joint and improve flexibility, range of motion, and balance.
• Alternative therapies: Acupuncture, massage, and heat may help relieve pain for some.

Surgery

• Arthroscopy: Minimally invasive procedure to clean the joint of dead tissue and inflammatory particles. May provide temporary relief.
• Osteotomy (Bone realignment surgery): Used when wear is uneven, realigns bone to better distribute weight.
• Joint Replacement (Arthroplasty): Removal of damaged joint parts and replacement with artificial prosthesis (metals or plastic). Performed when conservative treatments fail and pain is severe. Results usually very positive with significant improvement in movement and pain.

Lifestyle Changes

• Weight loss: Every 1 kg of weight loss reduces pressure on the knee by approximately 4 kg. This significantly slows disease progression.
• Regular exercise and movement: Low-impact sports such as swimming, yoga, and brisk walking for 150 minutes weekly strengthen muscles and improve flexibility.
• Using assistive devices: Cane or walker distributes weight better and reduces joint pressure.
• Maintaining proper posture: Proper sitting, standing, and moving reduces joint pressure.
• Applying heat and cold: Warm water or ice packs provide temporary relief depending on condition.
• Avoiding strenuous activities: Avoid high-impact sports like running, jumping, and painful activities.
• Adequate sleep and rest: Good night sleep and regular rest help body heal and recover.
• Improving nutrition: Eating foods rich in antioxidants and omega-3 fatty acids may help reduce inflammation.

• Depression and anxiety: Chronic pain and movement limitation may lead to depression, anxiety, and social isolation, affecting psychological quality of life.
• Loss of independence and disability: Advanced cases may lead to difficulty with daily activities such as bathing, dressing, or moving around the house.
• Complications from long-term medications: Continuous use of pain relievers may cause stomach, liver, and kidney problems.
• Permanent joint deformity: In untreated cases, permanent deformity may occur affecting function and appearance.
• Muscle and tendon contraction: Continuous lack of movement leads to permanent muscle and tendon contraction reducing range of motion further.
• Intractable chronic pain: Complex neuropathic pain may develop that does not respond easily to traditional treatments.
• General weakness and fatigue: Continuous pain and immobility lead to general weakness and physical exhaustion.
• Post-surgical complications: Joint replacement may lead to infection, blood clots, or implant failure (rare but possible).

• Maintain healthy weight: Avoid obesity through balanced diet and reducing fatty foods, sugars, and carbonated drinks.
• Regular exercise: Low-impact sports such as swimming, yoga, and brisk walking for 150 minutes weekly strengthen muscles and maintain joint flexibility.
• Avoid injuries: Use protective equipment when playing sports and avoid falls and accidents that may damage joints.
• Use correct work techniques: Lift heavy objects properly and avoid repetitive movements that stress joints.
• Maintain proper posture: Proper sitting, standing, and walking reduces long-term joint pressure.
• Strengthen muscles: Strengthening exercises especially around knee, hip, and spine provide better joint support.
• Avoid overusing joints: Take regular breaks if your work requires repetitive movements.
• Healthy nutrition: Eating foods rich in antioxidants, vitamins, and minerals helps maintain cartilage health.
• Avoid harmful habits: Quitting smoking and reducing alcohol may improve joint and overall health.
• Regular check-ups: If you have risk factors, consult orthopedic doctor regularly for early detection of any signs.