Seek Emergency Care If You Have:
- Obvious deformity of the knee
- Inability to bear any weight
- Severe pain and rapid swelling after injury
- Numbness or tingling below the knee
- Open wound over the knee joint
Call 911 or go to the nearest emergency room immediately.
Common Causes
Knee Pain can have many causes, ranging from minor to serious:
Diagnostic Tests for Knee Pain
Knee MRI
Detailed images of ligaments, meniscus, cartilage, and other soft tissues
When used: Suspected ACL tear, meniscus injury, or when surgery is being considered
Knee X-Ray
Views bones for fractures, arthritis, and alignment
When used: First-line for trauma, chronic pain, or suspected arthritis
Ultrasound
Dynamic imaging of tendons and fluid collections
When used: Suspected tendinitis, Bakers cyst, or to guide injections
CT Scan
Detailed bone imaging for complex fractures
When used: Fracture evaluation or surgical planning when MRI contraindicated
Prices shown are typical ranges for Illinois facilities. Click any test to compare actual prices.
When to See a Doctor
See a doctor if you heard a pop during injury, have significant swelling, cant bear weight, have knee instability or giving way, or if pain persists more than 2 weeks. Seek immediate care for obvious deformity, severe pain, or inability to move the knee.
What to Expect
Physical examination with specific tests (Lachman, McMurray) often diagnoses ligament and meniscus injuries. X-rays show bone problems and arthritis. MRI is the gold standard for soft tissue evaluation when surgery is considered.
Frequently Asked Questions
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