How common is difficulty climbing stairs in knee osteoarthritis?

Knee osteoarthritis may cause activity-related pain, stiffness after rest, swelling, or a grating sensation. Stairs place repeated load through the knee while it bends and straightens under body weight. Going down can challenge control, while going up can demand more pushing strength. Difficulty on stairs can also come from hip weakness, foot problems, or balance concerns, so the symptom does not identify one diagnosis by itself.

Hold the handrail, slow your pace, and place your foot fully on each step. If needed, use a step-to pattern rather than alternating feet until movement feels more controlled. Choose low-impact exercise and strengthening that does not cause a lasting flare, with physiotherapy guidance when possible. Weight management, footwear review, and an individualized pain plan may also support easier mobility.

Book an assessment if stair difficulty is increasing, causing falls, or limiting work and home activities. Seek urgent care after an injury if the knee cannot bear weight, locks, looks deformed, or swells rapidly. A hot, very swollen knee with fever, or new numbness or weakness, warrants prompt attention.

Ask what may be driving the stair problem, whether your knee needs imaging, and which strengthening exercises are appropriate. Ask how to use a rail or walking aid correctly, how to manage flare-ups, and when a review should be brought forward.