Is the pain around my kneecap patellofemoral pain or arthritis?

The short verdict

The symptoms overlap a lot, so age, history and imaging usually make the difference. Patellofemoral pain is very common in teenagers and young adults who run, play football or padel, or have recently increased training. The joint itself is structurally normal and the pain comes from load exceeding what the area tolerates. Kneecap arthritis is a wear process, sometimes after a previous injury or kneecap instability, and changes are visible on scans.

How they compare

• Age: patellofemoral pain is typical from the teens to the thirties; arthritis is more common from the forties onwards
• Triggers: both hurt on stairs, squatting, kneeling and sitting with bent knees, such as long flights or floor sitting
• Grinding: crepitus can occur in both, but coarse grinding with swelling points more to arthritis
• Swelling: unusual in patellofemoral pain; arthritis can cause episodes of fluid
• X-ray: normal in patellofemoral pain; arthritis shows narrowing between the kneecap and thigh bone, often on a special kneecap view
• Outlook: patellofemoral pain usually improves well with a targeted exercise programme; arthritis is managed long term, with surgery for some

Who each tends to affect

Patellofemoral pain tends to affect active teenagers and young adults, women more often than men, and people who have suddenly increased running, jumping or gym work. Kneecap arthritis tends to affect adults over 40, people with a history of kneecap dislocation or a fracture of the kneecap, those whose kneecap tracks to the outer side, and people with arthritis elsewhere in the knee. Both are helped by strengthening the hip and thigh muscles.

When to see a knee surgeon in Doha

Book an assessment if front-of-knee pain has lasted more than a few months despite sensible exercise, if the knee swells or gives way, or if the kneecap has ever dislocated. Dr. Gelber at Aman Hospital will examine how your kneecap moves, arrange X-rays with a kneecap view if needed, and explain which problem you have and the treatment options that fit it.