Knees hurt on the stairs? A knee care guide for adults over 40

Fine on flat ground, but your knees ache, feel stiff or click when you climb stairs, squat or stand up? Many people over 40 know this feeling.

Why are stairs so hard on the knees?

On the stairs your knees carry several times more force than when you walk on flat ground, and going down is harder than going up. If the cartilage is worn or the thigh muscles are weak, the pain shows up most here.

Common causes

• Knee wear (osteoarthritis): cartilage thins with age, so there is less cushioning between the bones.
• Kneecap problems: friction between the kneecap and thigh bone, worst when squatting, kneeling or on stairs.
• Weak thigh muscles: the muscles at the front of the thigh are your knee’s shock absorbers. When they are weak, the joint takes the load.
• Extra body weight: every extra kilo adds several kilos of load on your knees when you walk or climb.
• Old injuries: past sprains, meniscus or ligament injuries.

Safer stair tips

• Up with the good leg, down with the sore leg, then bring the other foot to the same step.
• Always hold the handrail and take one step at a time.
• Wear cushioned, non-slip shoes rather than slippers or heels.
• Take the lift when you can and save your knees for walking and exercise.

3 strengthening moves at home

1. Straight-leg raise: lie down, bend one knee, keep the other leg straight and lift it to the height of the bent knee. Hold 5 seconds, lower. 10 times each side.
2. Sit-to-stand: sit near the front of a chair, arms crossed, stand up slowly and sit down slowly. 10 times.
3. Wall sit: back against the wall, knees slightly bent (no more than 45°). Hold 10–20 seconds, 5 times.

Keep it pain-free; if it hurts, do fewer or stop. Swimming, cycling and brisk walking on flat ground are also kind to sore knees.

When to see a doctor

See a doctor promptly if your knee is red, swollen and warm, suddenly locks, gives way when you walk, cannot take your weight, or started hurting after a fall or injury.

Everyday nutrition

Strong muscles and a healthy weight are the foundation of knee care, and many people add a joint supplement for long-term support. FlexGuard is a natural herbal formula with cat’s claw, Scutellaria root, lemongrass and corn peptide, made to support joint cartilage and the muscles around the knee and to ease joint discomfort. Take it alongside exercise for 2–3 months; it is a health supplement, not a replacement for medical treatment.