Knee pain when climbing stairs is very common. It can start as a dull ache and slowly make every flight of steps harder. The good news is that most causes can be treated without surgery. So this guide explains why it happens and what helps. It also shows the warning signs that need a doctor.

Quick answer: why do you get knee pain when climbing stairs?

Stairs bend your knee again and again, and each step loads the joint. So a knee that is weak, worn or irritated hurts more on stairs than on flat ground. The most common causes are runner’s knee, osteoarthritis and a torn meniscus. Also, weak thigh and hip muscles often make all of them worse.

Why stairs make a sore knee hurt more

Walking on flat ground bends the knee only a little. Stairs ask for a deeper bend, so the kneecap and the joint work harder. The American Academy of Orthopaedic Surgeons lists pain on stairs as a typical sign of kneecap pain. However, the same pain often shows up when you squat or sit with bent knees for a long time.

6 common causes of knee pain when climbing stairs

  1. Runner’s knee (patellofemoral pain): This causes a dull ache at the front of the knee, around the kneecap. It often comes from overuse or a kneecap that does not glide well. In addition, you may hear popping or crackling on stairs.
  2. Osteoarthritis: The cushion in the joint slowly wears thin. As a result, the knee feels stiff, swollen or grinding. The NHS also lists osteoarthritis as a common cause of knee pain without an injury.
  3. A torn meniscus: The meniscus is the rubbery pad inside the knee. A tear can make the knee catch, lock or give way. Then pain often gets worse when you twist or climb.
  4. Tendon or ligament strain: Sprains, strains and tendonitis can follow a fall, a sports injury or a sudden jump in activity. Stairs then pull on the sore tissue, so it hurts.
  5. Bursitis: Bursae are small fluid sacs that cushion the joint. When they swell, however, the knee feels tender and puffy.
  6. Weak thigh and hip muscles: Weak muscles let the kneecap drift off track. Strong muscles, on the other hand, share the load. Therefore, this cause often sits behind the other five.

Clues that point to the cause

Your pain pattern can give a hint, but only a doctor can confirm the cause.

  • A dull ache at the front of the knee that also hurts after long sitting points to runner’s knee.
  • Morning stiffness, swelling and a grinding feel may point to osteoarthritis.
  • A knee that catches, locks or gives way may point to a meniscus tear.
  • Pain after an injury or a sudden rise in activity may point to a strain.

What you can do at home for knee pain when climbing stairs

First, start with these simple steps:

  • Use the handrail and take one step at a time.
  • Cut back on activities that clearly set off the pain.
  • Wrap an ice pack in a cloth and hold it on the knee for up to 20 minutes. Repeat every 2 to 3 hours.
  • Take paracetamol or ibuprofen, as tablets or gel, if your doctor says it is safe for you.

Meanwhile, choose low-impact exercise, such as cycling or swimming, while the knee settles. Our aquatherapy page explains water-based exercise that is gentle on the joints.

Exercises that help knee pain when climbing stairs

The NHS says exercise is one of the most important treatments for knee arthritis. For runner’s knee, strong thigh and hip muscles also keep the kneecap on track. So try these slow moves once a day:

  • Straight leg raise: Lie on your back. Tighten the thigh and lift the straight leg a short way. Lower it slowly.
  • Glute bridge: Lie on your back with knees bent. Lift your hips and squeeze your buttocks.
  • Low step-up: Step onto a low step, then step down slowly. Hold the rail.
  • Wall slide: Lean on a wall and slide down only a little. Stop before the pain starts.
  • Quadriceps strengthening: lie with legs straight. Tighten your front thigh muscle to push the back of knee downwards, hold for 10 seconds, then relax. Repeat 10 to 20 times.

Start with 8 to 10 slow repeats. However, stop if the pain gets sharp. The NHS warns that doing too much too fast can harm your joints. So ask a physiotherapist for a plan that fits you. You can read about our physiotherapy services here.

Weight and shoes also matter for knee pain when climbing stairs

Extra body weight adds strain to the knees. Losing weight slowly and safely can help, especially with osteoarthritis. Shoes with shock-absorbing soles can also ease pressure as you walk. Avoid crash diets, because slow weight loss is safer.

Warning signs: when to see a doctor for knee pain on stairs

First, see a doctor if the pain has not improved after a few weeks. Second, get urgent medical help if you have any of these signs:

  • You cannot bear weight on the leg or cannot move the knee.
  • The knee is badly swollen or has changed shape.
  • The knee locks or gives way.
  • You have a fever, and the knee looks red or feels hot.

When is surgery the next step?

Surgery is rarely needed for knee pain when climbing stairs that comes from runner’s knee. For arthritis, the NHS says surgery is considered when other treatments no longer help. For example, a torn meniscus that keeps locking may need knee arthroscopy. Severe arthritis may need a knee replacement. Read our guide on the signs you may need a knee replacement if you are unsure. You can also learn about arthritis treatment first.

Frequently asked questions

Why does my knee hurt only on stairs and not when walking?

Stairs bend the knee more and load the kneecap harder. So a mildly irritated knee may feel fine on flat ground. This pattern is typical of runner’s knee.

Is knee pain when climbing stairs a sign of arthritis?

It can be, especially if you also have stiffness or swelling. However, runner’s knee and a meniscus tear cause the same pain. So a doctor should check your knee and tell you the cause.

Should I stop using the stairs?

Not completely. Cut back while the pain is sharp, and use the handrail. Then build up slowly with gentle exercise.

Can losing weight reduce knee pain on stairs?

Yes, it often helps. Extra weight strains the knees, so slow and safe weight loss takes some load off.

When should I see an orthopaedic doctor?

See one if the pain lasts more than a few weeks. Also, go quickly if you cannot bear weight, or the knee is hot, red or badly swollen.

Contact Us

Still struggling with knee pain when climbing stairs? An expert can check your knee and then plan the right care. You can book an appointment at OrthoSport Hospital on SG Highway, Ahmedabad. Also read our guide on knee pain treatment without surgery.

This article is for general information. It does not replace advice from your doctor.

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