Runner's Knee
Runner's knee (patellofemoral pain syndrome) is a broad term for pain around or behind the kneecap, particularly during activities like running, squatting, and sitting for prolonged periods. It's one of the most common running injuries and affects people of all activity levels. The pain results from improper tracking of the kneecap (patella) in the groove at the front of the knee, leading to irritation of the cartilage underneath.
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Symptoms
- Dull, aching pain behind or around the kneecap
- Pain that worsens going downstairs or downhill
- Pain after prolonged sitting with the knee bent (theater sign)
- Swelling around the kneecap
- Grinding or clicking sensation when bending the knee
- Pain that increases during running, jumping, or squatting
When to See a Doctor
See a sports medicine specialist if knee pain is persistent, worsening, or interfering with your activity level. Runner's knee that is not addressed often becomes chronic.
Treatment Options
Activity modification
Reducing high-impact activity while maintaining fitness with low-impact alternatives like swimming or cycling.
Physical therapy
Hip strengthening (especially hip abductors and external rotators), quadriceps strengthening, and running gait retraining. The primary treatment.
Orthotics and shoe assessment
Custom or over-the-counter insoles to correct foot biomechanics that contribute to kneecap tracking problems.
Patellar taping or bracing
Kinesiology tape or a patellar tracking brace to improve kneecap alignment during activity.
Anti-inflammatory medication
NSAIDs for short-term pain management during acute flares.
Recovery Timeline
Most cases of runner's knee improve in 4-8 weeks with physical therapy. Returning to running is gradual. Chronic cases may take 3-6 months of consistent rehabilitation.
Frequently Asked Questions
Is runner's knee serious?
Runner's knee is not a structural injury in most cases — the cartilage and bone are typically intact. However, it can become chronic and significantly limit activity if not treated appropriately. With proper rehabilitation addressing hip and knee strength, most people make a full recovery.
Why does runner's knee hurt more going downstairs?
Going downstairs increases the force on the patellofemoral joint (where the kneecap meets the thigh bone) by 3-4 times body weight, compared to level walking. This increased load aggravates the irritated cartilage under the kneecap.
What type of doctor treats runner's knee?
Sports medicine physicians and orthopaedic surgeons with a sports medicine focus are the primary specialists. Physical therapists are central to the rehabilitation program, particularly for gait analysis and hip strengthening.
Related Specialty
Sports Med Specialists →Runner's Knee by State
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This information is for educational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare provider for diagnosis and treatment.