Short answer: knee pain when climbing stairs is common: stairs put a lot of load through the knee, so they're often where a sore knee first complains. Common reasons are overuse, osteoarthritis and irritation around the kneecap.
Knee pain when climbing stairs: what to know
Common causes
- Osteoarthritis. Pain and stiffness that get worse with use are typical, and a GP may suspect it from around age 45.[2]
- Overuse or strain. Pain after overstretching, overusing or twisting the knee.[1]
- Tendon, ligament or cartilage problems after an injury.[1]
What may help
Take stairs slower, use the handrail, lead with the stronger leg going up and the weaker leg going down, wear supportive shoes, and ask a physiotherapist about strengthening.[2]
When to see a doctor
See a doctor if the knee swells, locks, gives way, or the pain lasts more than a few weeks.[1]
Sources
Written by the Prife iTeraCare team and last reviewed on 9 October 2026. This is general information, not medical advice, and it does not replace your doctor or physiotherapist. A session is a wellness experience, not a medical treatment.
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