Why Does My Knee Hurt

Why Does My Knee Hurt When Going Up or Down Stairs? Causes and Physiotherapy Treatment

Have you ever noticed that your knee feels fine when you're sitting or walking on flat ground, but suddenly hurts when you walk up or down stairs?

You're not alone. Knee pain when using stairs is a common complaint and can be caused by everything from muscle weakness and poor movement patterns to arthritis, tendon irritation, or an underlying knee injury.

The good news is that knee pain does not always mean you need surgery or that you have to stop being active. A thorough clinical physiotherapy assessment can help identify what is contributing to your pain and develop a treatment plan to improve strength, mobility, and function.

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Why Does My Knee Hurt

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Why Does My Knee Hurt on Stairs?

Going up and down stairs places more demand on the muscles and joints around your knee than walking on a flat surface. When your knee is repeatedly exposed to more load than it can currently tolerate, pain can develop.

Some common causes of knee pain when climbing stairs include:

1. Patellofemoral Pain Syndrome

Patellofemoral pain occurs around or behind the kneecap and is one of the common causes of pain with activities such as:

  • Walking up or down stairs
  • Squatting
  • Lunging
  • Running
  • Jumping
  • Sitting for long periods

You may notice aching around the front of your knee, particularly after increasing your activity level.

2. Knee Osteoarthritis

Knee arthritis can cause pain, stiffness, and reduced mobility. Symptoms may become more noticeable when the knee is loaded during activities such as stairs, squats, or longer walks.

Physiotherapy can help people with knee osteoarthritis improve strength, mobility, balance, and confidence with movement.

3. Quadriceps or Hip Weakness

Your quadriceps, glutes, and other muscles around your hip and knee help control how your leg moves. If these muscles are not strong enough or are not working efficiently, your knee may experience additional stress during activities such as stair climbing.

A physiotherapist can assess your movement and determine whether weakness or poor muscle control may be contributing to your symptoms.

4. Patellar Tendon Irritation

The patellar tendon connects your kneecap to your shinbone and plays an important role in activities such as walking, running, and jumping. Pain at the front of the knee, particularly below the kneecap, may be related to irritation of this tendon.

This can occur after a sudden increase in running, jumping, sports, or other physical activity. For stubborn tendon pain, shockwave therapy can help stimulate healing.

5. Meniscus or Other Knee Injuries

Knee pain can also occur following a sports injury, twisting motion, fall, or other trauma.

Some people may experience:

  • Knee swelling
  • Clicking or catching
  • Difficulty bending or straightening the knee
  • Pain with twisting
  • A feeling that the knee is giving way

These symptoms should be assessed by a healthcare professional to determine the appropriate treatment.

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Why Does My Knee Hurt More Going Downstairs?

Many people find that going downstairs hurts more than going upstairs.

This is partly because your quadriceps muscles have to work eccentrically, meaning they control the movement while lengthening, to help you lower your body safely. If your knee is irritated, or your muscles are not controlling the movement effectively, this increased demand can make symptoms more noticeable.

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Can Physiotherapy Help Knee Pain?

Yes. Knee pain physiotherapy focuses on identifying why your knee is hurting rather than simply treating the painful area.

At VanCity Physio, your physiotherapist may assess:

  • Knee mobility
  • Hip and ankle mobility
  • Leg strength
  • Balance and stability
  • Squatting and stair mechanics
  • Walking or running patterns
  • Previous injuries
  • Your activity level and goals

Your treatment plan may include:

Strengthening Exercises

Exercises can target the quadriceps, hamstrings, glutes, and other muscles involved in supporting and controlling the knee. A progressive active rehabilitation program builds this strength safely over time.

Mobility Exercises

Improving mobility in the knee, hip, or ankle may help you move more comfortably and efficiently.

Manual Therapy

Depending on your assessment, hands-on manual therapy may be used to help improve mobility and reduce pain.

Movement Retraining

Your physiotherapist can teach you how to improve your movement mechanics during activities such as squatting, lunging, running, and climbing stairs.

Gradual Return to Activity

Completely avoiding movement is not always the answer. If your pain is sport-related, sports physiotherapy can guide a gradual return to the activities you enjoy while managing your symptoms.

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Should I Stop Exercising If My Knee Hurts?

Not necessarily.

Many people with knee pain can continue exercising with appropriate modifications. For example, your physiotherapist may recommend temporarily changing:

  • Exercise intensity
  • Number of repetitions
  • Running distance
  • Squat depth
  • Jumping volume
  • Training frequency

The goal is to find the right balance between loading the knee enough to build capacity without continually aggravating your symptoms.

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When Should You See a Physiotherapist for Knee Pain?

Consider booking a physiotherapy assessment if your knee pain:

  • Keeps coming back
  • Is getting worse
  • Is affecting your workouts or sports
  • Makes stairs difficult
  • Prevents you from walking comfortably
  • Is affecting your sleep
  • Causes swelling or stiffness
  • Started after an injury
  • Makes you feel unstable or like your knee may give way

Early assessment can help identify contributing factors and give you a clear plan for recovery.

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Don't Let Knee Pain Keep You From Doing What You Love

Whether your knee pain started from sports, exercise, an old injury, or gradually developed over time, you don't have to simply live with it.

A personalized physiotherapy treatment plan for knee pain can help improve strength, mobility, movement, and confidence so you can get back to the activities that matter to you. Our Vancouver physiotherapists work with patients experiencing knee pain, sports injuries, arthritis, mobility issues, and many other musculoskeletal conditions.

Experiencing knee pain when walking, exercising, or using stairs? Book a physiotherapy assessment at our Downtown clinic or Fairview clinic and find out what's contributing to your symptoms.

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Frequently Asked Questions

Why do I only get knee pain when using stairs and not on flat ground?

Stairs load the knee far more than level walking, especially the front of the joint. If a muscle, tendon, or the kneecap is irritated or not well supported, that extra demand shows up as pain on stairs while flat walking still feels fine.

Why does going downstairs hurt more than going up?

Going down requires your quadriceps to control your body weight as they lengthen, which places more load behind the kneecap. If the knee is irritated or the muscles aren't controlling the movement well, downstairs often feels worse.

Should I stop using stairs if my knee hurts?

Not usually. Completely avoiding stairs can reduce the knee's capacity over time. A physiotherapist can show you how to modify your activity and gradually build strength so stairs become comfortable again.

Can physiotherapy fix knee pain without surgery?

In many cases, yes. Most knee pain from muscle weakness, tendon irritation, or arthritis improves with strengthening, mobility work, and movement retraining. Surgery is usually considered only when conservative care hasn't helped.

How long does it take for knee pain to improve?

It depends on the cause and how long you've had symptoms. Some people feel better within a few weeks, while tendon issues or arthritis may take longer. Your physiotherapist will track your progress and adjust your plan.

Do I need a referral to see a physiotherapist in Vancouver?

No referral is required in British Columbia. VanCity Physio also offers direct billing to most extended health plans, including ICBC and WorkSafeBC.