Why do I have a burning pain at the front of my knee?

Burning is a description, not a diagnosis

Patients use the word burning for different sensations. Some mean a deep, hot ache behind the kneecap after activity. Others mean a stinging pain right on the tendon below the kneecap. And some mean a surface feeling, like a sunburn or pins and needles, on a patch of skin.

Where you feel it, when it comes on, and whether the skin itself is sensitive are the clues a doctor uses to separate the causes.

Possible causes

• Patellofemoral pain or softened cartilage behind the kneecap: a deep, warm ache after stairs, squats or running
• Patellar tendinopathy: a localised burning or stinging just below the kneecap during and after jumping or heavy leg work
• Prepatellar bursitis: warmth and soreness over a soft swelling on the front of the kneecap
• Irritation of the infrapatellar branch of the saphenous nerve: burning, tingling or numbness on the skin below and to the inner side of the kneecap, sometimes after a knock or previous knee surgery
• Pain referred from the lower back, which can cause burning down the front of the thigh and knee

What you can try

If the burning is linked to activity, reduce the triggering exercise for two to three weeks, then build it back gradually with strengthening. Ice wrapped in a cloth for 15 minutes can ease it. Avoid placing heat directly on a knee that already feels warm.

If the skin is sensitive to touch or clothing, or there is a numb patch, note exactly where it is and whether your back or thigh also hurts. These details matter more than any scan in guiding the assessment.

Red flags and when to see a knee surgeon

Go to an emergency department if the knee becomes hot, red and swollen, especially with fever, as joint or bursa infection needs urgent treatment. Seek care quickly if you also have weakness in the leg, numbness spreading down the leg, or loss of bladder or bowel control.

Book an appointment if the burning lasts more than a few weeks or keeps returning. At Aman Hospital in Doha, Dr. Gelber examines the knee and the nerves around it, and checks the back and hip if the pattern suggests the pain starts elsewhere.