Osteoarthritis (OA)
Osteoarthritis is the most common form of arthritis. It involves cartilage breakdown, subchondral bone remodeling, synovial inflammation, and osteophyte formation, leading to joint pain, stiffness, and reduced mobility. Knees, hips, hands, and spine are most often affected, but any synovial joint can develop OA.
Causes & Risk Factors
- Age-related wear and tear
- Joint injury, repetitive stress, or misalignment
- Genetics and family history
- Obesity (especially for knee/hip OA)
- Metabolic disorders (diabetes, dyslipidemia)
- Hormonal changes (postmenopausal estrogen decline)
- Joint hypermobility or congenital abnormalities
Symptoms
- Deep, aching joint pain that worsens with activity
- Morning stiffness or after inactivity (“gelling”), typically <30 minutes
- Decreased range of motion, crepitus (grating sensation)
- Swelling, bony enlargements (Heberden/Bouchard nodes)
- Joint instability or buckling
- Sleep disturbance from nighttime pain
Diagnosis
- Clinical exam focusing on pain location, range of motion, stability
- X-rays showing joint space narrowing, osteophytes, sclerosis
- MRI for cartilage assessment or to rule out other pathology
- Labs typically normal; used to exclude inflammatory arthritis
Treatment & Management
Lifestyle & Self-Care
- Weight management to reduce joint load (even 5–10% loss helps knees)
- Low-impact exercise: walking, cycling, swimming, tai chi
- Strength training for supporting muscles, especially quadriceps/hips
- Stretching and range-of-motion routines
- Proper footwear or orthotics; assistive devices (canes, braces)
Medications & Injections
- Topical NSAIDs for hands/knees; oral NSAIDs as needed (monitor GI/renal risk)
- Acetaminophen, duloxetine, or short courses of tramadol for select patients
- Intra-articular corticosteroid injections for flares
- Hyaluronic acid injections (variable benefit)
- Emerging biologic injections (PRP, stem cell) still investigational
Procedures
- Arthroscopic debridement rarely indicated
- Osteotomy to realign weight-bearing axes in younger patients
- Joint replacement (TKA, THA, shoulder) when conservative measures fail
Living with OA
- Track pain, stiffness, activity level, medications, and flares
- Pace activities (break tasks into shorter chunks)
- Use heat before activity and ice after exertion
- Modify home/work environments for joint protection
- Address emotional impact through counseling or support groups
Complications
- Chronic pain, disability, and reduced work productivity
- Falls due to weakness or instability
- Sleep disturbances, depression, weight gain due to inactivity
Research & Future Directions
Scientists explore disease-modifying OA drugs (DMOADs), cartilage regeneration, and precision bracing/exoskeleton support.
Experimental & Emerging Treatments
- Platelet-Rich Plasma (PRP) & Stem Cell Injections: Early studies show pain relief and potential cartilage support, but protocols vary widely.
- Senolytic Drugs: Target aging cells in joints to reduce inflammation and slow degeneration.
- Tissue Engineering & 3D-Printed Implants: Customized cartilage scaffolds and joint surfaces may better replicate native biomechanics.
- Smart Wearables & Exoskeletons: Provide real-time gait feedback and unloading assistance for arthritic joints.
Track Osteoarthritis with Diagnoza.care
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Medical Disclaimer: Informational only. Consult your orthopedic specialist or rheumatologist to confirm diagnosis and build a personalized management plan.
Sources: American College of Rheumatology, Osteoarthritis Research Society International, National Institutes of Health