Osteoarthritis: Symptoms, Diagnosis and Treatment

Overview

Osteoarthritis (OA) is the most common form of arthritis, resulting from the gradual breakdown of cartilage — the smooth tissue that cushions joints — over time. As cartilage wears down, bones can rub against each other, causing pain, stiffness, and reduced mobility. It most commonly affects the knees, hips, hands, and spine.

Unlike autoimmune forms of arthritis (RA, PsA), OA isn't primarily driven by immune system attack, though inflammation plays a role in symptoms and progression. Risk factors include aging, joint injury, repetitive stress, obesity, and genetics.

OA is a leading cause of disability, but its progression and impact vary widely. Many people manage symptoms effectively for years with non-surgical approaches, while others eventually need joint replacement. Early, active management — particularly exercise and weight management — can meaningfully slow progression and improve function.

Symptoms

Joint pain that worsens with activity and improves with rest
Stiffness, particularly after periods of inactivity or in the morning (typically improving within 30 minutes, unlike RA)
Reduced range of motion
A grating or crackling sensation (crepitus) with joint movement
Swelling around the joint
Bone spurs, sometimes felt as hard lumps around affected joints
Muscle weakness around the affected joint from disuse
Pain that may worsen with weather changes (commonly reported, though the mechanism isn't fully understood)

Diagnosis

Clinical exam — assessing joint tenderness, range of motion, swelling, and crepitus
X-rays — show joint space narrowing, bone spurs, and other characteristic changes, though findings don't always correlate perfectly with pain severity
MRI — occasionally used for more detailed evaluation, particularly if surgery is being considered or diagnosis is unclear
Blood tests — not diagnostic for OA itself, but sometimes used to rule out inflammatory arthritis (RA, PsA) if the presentation is ambiguous
Joint fluid analysis — occasionally performed to rule out other causes of joint symptoms like gout or infection

Treatments

Exercise — one of the most effective treatments; strengthening muscles around the joint and maintaining range of motion, tailored to the affected joint
Weight management — significantly reduces load on weight-bearing joints (knees, hips) and can meaningfully reduce pain
Physical therapy — for guided, joint-specific exercise programs
NSAIDs — oral or topical, for pain and inflammation relief
Acetaminophen — for mild pain, generally with a better side-effect profile than NSAIDs for long-term use
Corticosteroid injections — for significant flares, providing temporary relief
Hyaluronic acid injections — sometimes used for knee OA, though evidence for effectiveness is mixed
Assistive devices — braces, canes, or shoe inserts to reduce joint stress
Joint replacement surgery — for severe OA significantly affecting quality of life and not responding to conservative treatment; hip and knee replacements are highly effective and common procedures with generally excellent outcomes

Medical Resources

Your Care Plan

A step-by-step guide to navigating your condition, from finding the right doctors to advocating for the care you deserve.

Step 1: Doctors to See

Start with: Your primary care physician for initial evaluation and X-rays.

Then consider:

Orthopedist — for joint-specific evaluation, injections, or surgical consultation if conservative treatment isn't sufficient
Physical therapist — for a structured, joint-specific exercise program
Rheumatologist — if there's uncertainty about whether an inflammatory arthritis is contributing
Registered dietitian — for weight management support when relevant

Step 2: Advocate for Yourself

Don't accept "it's just arthritis, nothing can be done" as a final answer — exercise and weight management are genuinely effective, evidence-based treatments, not just afterthoughts, and a referral to physical therapy is a reasonable and often underused first step. If pain significantly limits your daily activities despite conservative treatment, ask specifically about your candidacy for joint replacement rather than assuming you should just "live with it" — these procedures have excellent outcomes for appropriate candidates. If your OA presentation seems unusual (very young age, multiple joints, prominent morning stiffness lasting over an hour), ask whether inflammatory arthritis should be ruled out.

Step 3: Your Action Plan

See your primary care doctor for evaluation and X-rays of affected joints.
Start a structured exercise program, ideally with physical therapy guidance specific to your affected joint.
If applicable, work on gradual weight management to reduce joint load.
Use NSAIDs or acetaminophen as needed for pain, per your doctor's guidance.
Consider assistive devices (braces, shoe inserts) to reduce joint stress in daily activities.
If flares are significant, discuss corticosteroid injections with your doctor.
If pain significantly limits your life despite these measures, ask about a referral to an orthopedist for surgical evaluation.

Important: This report is educational information, not medical advice. Always consult a qualified healthcare professional for diagnosis and treatment decisions.