What is osteoarthritis

Understanding Osteoarthritis

Osteoarthritis (OA) is a degenerative joint disease characterized by the progressive breakdown of cartilage, the slippery tissue that covers the ends of bones and allows smooth joint movement. As cartilage deteriorates, bone begins to rub against bone, causing pain, inflammation, stiffness, and reduced mobility. Osteoarthritis is the most common form of arthritis, affecting millions of people worldwide, particularly older adults.

Causes and Risk Factors

Osteoarthritis develops due to years of wear and tear on joints combined with various risk factors:

• Age: Risk increases significantly after age 50
• Joint Injuries: Previous injuries increase OA development in affected joints
• Overuse: Repetitive stress on joints from work or sports
• Weight: Extra body weight puts additional stress on weight-bearing joints
• Genetics: Family history increases susceptibility to osteoarthritis
• Muscle Weakness: Weak muscles around joints provide less support

Affected Joints

While osteoarthritis can affect any joint, it most commonly develops in weight-bearing joints and heavily used joints:

• Knees: Bear significant body weight during movement
• Hips: Major weight-bearing joints prone to degeneration
• Hands: Repetitive use makes finger joints susceptible
• Spine: Neck and lower back frequently affected by degenerative changes
• Feet: Can develop OA from standing and walking stress

Symptoms and Progression

Osteoarthritis symptoms develop gradually and worsen over time. Early symptoms include joint pain after activity, morning stiffness that typically improves with movement, and occasional swelling. As the disease progresses, pain becomes more constant, stiffness increases, and reduced range of motion significantly impacts daily activities. Some people develop bone spurs, which are small bony growths that form around damaged joints.

Diagnosis and Monitoring

Doctors diagnose osteoarthritis through physical examination, medical history, and imaging tests. X-rays reveal cartilage loss and bone changes, while MRI scans provide detailed images of joint structures. Regular monitoring through imaging helps track disease progression and guide treatment decisions. Blood tests may be performed to rule out other types of arthritis.

Treatment Options

While there is no cure for osteoarthritis, various treatments manage symptoms and slow progression:

• Physical Therapy: Strengthening exercises improve joint support and reduce pain
• Medications: Pain relievers and anti-inflammatory drugs reduce discomfort
• Injections: Corticosteroid or hyaluronic acid injections provide temporary relief
• Lifestyle Modifications: Weight management and activity adjustment reduce joint stress
• Surgery: Joint replacement is an option when conservative treatments fail

Prevention and Management

While some risk factors cannot be controlled, several preventive measures can reduce osteoarthritis risk or slow progression: maintaining a healthy weight, staying physically active with low-impact exercises, protecting joints from injury, avoiding repetitive joint stress, and managing other health conditions. Early intervention and consistent management significantly improve quality of life for people with osteoarthritis.