Swollen Knee: Causes, Treatment, and Home Care (RICE & Beyond)

Managing Knee Swelling

Knee swelling (effusion) can result from injury, overuse, arthritis, infection, or other conditions. Treatment depends on the underlying cause, but the following general measures help reduce swelling and pain.

Immediate Self-Care: The RICE Protocol

1. Rest: Avoid activities that stress the knee (running, jumping, deep squats). Use crutches if bearing weight is painful.
2. Ice: Apply an ice pack (wrapped in a thin towel) for 15–20 minutes every 2–3 hours for the first 48–72 hours.
3. Compression: Wear a snug (not tight) elastic bandage or knee sleeve to limit swelling.
4. Elevation: Prop the leg above heart level whenever sitting or lying down.

Medications

• Over-the-counter NSAIDs (ibuprofen, naproxen) reduce pain and inflammation. Follow label directions; consult a doctor if you have kidney disease, ulcers, or take blood thinners.
• Acetaminophen helps pain but not inflammation.

Additional Measures

• Avoid heat (hot packs, hot tubs) for the first 72 hours—it can worsen swelling.
• Gentle range-of-motion exercises once acute pain subsides to prevent stiffness.
• Physical therapy for strengthening, flexibility, and biomechanical correction if swelling stems from injury or chronic conditions.

When to Seek Medical Attention

• Severe swelling, inability to bear weight, or obvious deformity
• Fever with knee redness/warmth (possible infection)
• Swelling that doesn't improve after 3–5 days of RICE
• Recurrent or chronic swelling without clear cause

A healthcare provider can diagnose the cause (e.g., meniscus tear, ligament injury, osteoarthritis, gout, bursitis) and recommend targeted treatment, which may include aspiration, corticosteroid injection, or surgery.