Why Do I Get Knee Pain Going Downstairs?

Knee Pain Going Downstairs

Knee pain going downstairs is commonly caused by increased pressure behind the kneecap (the patellofemoral joint). When descending stairs the quadriceps muscles must control the body lowering with each step, which increases compression through the front of the knee. If the joint is irritated, weak or overloaded, this added stress can trigger pain around the kneecap during stair descent.

Knee pain going downstairs is a very common complaint we see at Sydney Physio Clinic. Many people notice that their knee feels relatively comfortable when walking on flat ground or even going upstairs, yet pain appears when descending stairs.

This happens because the knee joint experiences higher loads during stair descent. The quadriceps muscles must control the body as it lowers with each step, which increases compression through the front of the knee and the patellofemoral joint.

Understanding why knee pain going downstairs occurs can help guide appropriate treatment and rehabilitation.

Why Stairs Place More Load on the Knee

When walking downstairs the knee must control body weight while bending at the same time. This requires strong eccentric contraction of the quadriceps muscles.

Research suggests that patellofemoral joint forces can increase significantly during stair descent compared with level walking (Hart et al., 2021). As the knee bends, the kneecap (patella) presses more firmly against the femur.

If the joint is irritated, overloaded or poorly controlled, this compression can trigger pain at the front of the knee or around the kneecap.

People often notice symptoms such as:

• Pain at the front of the knee
• Discomfort around or behind the kneecap
• Pain that worsens when descending stairs
• A feeling of weakness or instability
• Occasional clicking or grinding sensations

Common Causes of Knee Pain Going Downstairs

Several knee conditions can make stair descent uncomfortable. The most common include:

Patellofemoral pain syndrome
Often referred to as “runner’s knee,” this condition involves irritation around the kneecap. Poor tracking of the patella or weakness in the quadriceps and hip muscles may contribute. This condition is one of the most common reasons people experience knee pain going downstairs or discomfort when walking downhill.

Patellar tendinopathy
Pain may develop in the tendon connecting the kneecap to the shin. This structure helps control knee extension and absorbs load during stair descent. Symptoms are often more noticeable with jumping, running, and repeated stair use.

Knee osteoarthritis
Degenerative joint changes can increase pain during weight-bearing tasks, including stairs, hills and longer walks. Stiffness or swelling may also be present.

Quadriceps weakness
If the quadriceps muscles lack strength or endurance, they may struggle to control knee flexion when stepping down, which can increase stress through the front of the knee.

Hip and pelvic control issues
Weakness in the gluteal muscles can allow the knee to drift inward during loading. This can increase stress on the patellofemoral joint, particularly during tasks like stairs and squats.

Why Knee Pain Is Often Worse Going Downstairs Than Upstairs

Many people notice that knee pain going downstairs is more uncomfortable than walking upstairs. This difference is mainly related to how the knee joint handles load during each movement.

When walking upstairs the quadriceps muscles help extend the knee and lift the body upward. Although this still requires effort, the knee joint is generally working in a more controlled way.

Descending stairs is different. The quadriceps must contract eccentrically to slow the body as it lowers onto the next step. This creates higher compression forces behind the kneecap and through the patellofemoral joint.

If the knee joint is irritated, weak or inflamed, this increased compression can trigger pain at the front of the knee. For this reason many people experience knee pain walking downstairs even when flat walking feels relatively comfortable.

Improving quadriceps strength, hip control and movement patterns often helps the knee tolerate stair descent more comfortably over time.

Many people also ask why their knee hurts going downstairs but not upstairs. This usually occurs because descending stairs places greater load on the patellofemoral joint. The quadriceps must control the body lowering with each step, which increases compression behind the kneecap. If the joint is irritated or the surrounding muscles are weak, this additional load can trigger pain when walking downstairs even if going upstairs feels comfortable.

How Physiotherapy Can Help

Assessment by a physiotherapist can help identify the specific cause of knee pain going downstairs. At Sydney Physio Clinic we assess strength, movement control, joint mobility and how the knee behaves during functional tasks such as stairs and squatting.

Treatment often focuses on improving strength and movement patterns so the knee can tolerate loading more comfortably.

Common physiotherapy strategies include:

• Quadriceps strengthening exercises (often with a gradual eccentric focus)
• Gluteal and hip stability training
• Movement retraining for stairs and squatting
• Patellar taping or support where appropriate
• Gradual load progression back to walking, running or sport

Exercise therapy is considered one of the most effective conservative treatments for patellofemoral pain and related knee conditions (Barton et al., 2022).

Simple Tips to Reduce Pain on Stairs

If stairs currently aggravate your knee, a few simple adjustments may help reduce irritation while you work on strengthening.

• Take stairs slowly and use a handrail for support
• Keep the knee aligned over the second toe when stepping down
• Focus on controlled movement rather than dropping quickly
• Build strength in the quadriceps and glute muscles
• Avoid sudden increases in running, hills or stair volume

Some people also benefit from temporary use of a knee support or taping technique to improve comfort during activity.

Supports That May Help With Knee Pain Going Downstairs

For some people, temporary external support can help reduce irritation while the knee is being rehabilitated. Supports do not replace strengthening exercises, but they may improve comfort during activities such as walking downstairs, longer walks or returning to sport.

The most appropriate option depends on the underlying cause of symptoms and the level of support required.

Patella Tendon Straps

A patella tendon strap sits just below the kneecap and applies gentle pressure to the patellar tendon. This may help redistribute load through the tendon and reduce discomfort during activities that place higher demand on the knee, including stair descent, running or jumping.

These straps are commonly used for patellar tendon irritation or conditions sometimes referred to as jumper’s knee. Because they are lightweight and low profile, many people find them comfortable to wear during activity.

Knee Compression Sleeves

A knee compression sleeve provides light support and gentle compression around the joint. This type of support may help improve proprioception, which is the body’s awareness of joint position during movement.

Compression sleeves are often used for mild knee discomfort, early osteoarthritis or situations where people want light support without restricting movement.

Structured Knee Braces

For people who require additional stability, a structured knee brace may provide greater support. These braces typically include reinforced panels or straps that help guide the knee joint during movement.

Structured braces may be considered when knee pain going downstairs is associated with instability, ligament injury or more significant joint irritation.

At Sydney Physio Clinic we generally recommend combining any support with a strengthening program that targets the quadriceps and hip muscles. Improving muscle control helps reduce stress through the knee and allows the joint to tolerate activities such as stairs more comfortably over time.

When to Seek Professional Advice

Persistent knee pain going downstairs should not be ignored, particularly if symptoms continue for several weeks.

A physiotherapy assessment may be helpful if you experience:

• Pain that continues for more than two weeks
• Swelling around the knee
• Knee instability or giving way
• Difficulty with daily activities such as stairs, squatting or prolonged sitting 
• Locking, catching, or sudden sharp pain after a twist or fall

Early management often helps prevent symptoms from becoming more persistent and supports a safer return to activity.

Frequently Asked Questions

Why does my knee hurt going downstairs but not upstairs?

Knee pain going downstairs is often related to higher loads through the patellofemoral joint. When descending stairs the quadriceps muscles must control the body lowering, which increases pressure behind the kneecap. This added compression can irritate structures around the patella and trigger pain.

Is knee pain going downstairs a sign of runner’s knee?

It can be. Knee pain going downstairs is commonly associated with patellofemoral pain syndrome, sometimes referred to as runner’s knee. This condition often worsens with activities that increase knee bending and load, such as stairs, squatting, running downhill and prolonged sitting.

Can weak quadriceps cause knee pain on stairs?

Weak quadriceps muscles can contribute to knee pain going downstairs because these muscles control the knee when lowering the body. If they cannot manage the load effectively, the patellofemoral joint may experience increased stress, leading to discomfort.

Should I avoid stairs if my knee hurts?

It may be helpful to temporarily reduce activities that aggravate symptoms, including frequent stair descent. However, complete avoidance is usually not necessary. A physiotherapy program that improves quadriceps and hip strength can often help the knee tolerate stairs more comfortably over time.

Can a knee brace help with knee pain going downstairs?

Some people find that a knee brace, compression sleeve or patella strap provides temporary support during activities such as walking downstairs, hiking or returning to exercise. These supports may help improve comfort while strength and movement control are being improved through rehabilitation.

Summary

Knee pain going downstairs is usually related to increased loading through the patellofemoral joint and the muscles that control knee movement. Weakness, poor movement control or joint irritation can all contribute to symptoms.

Targeted strengthening, movement retraining and appropriate load management can significantly improve knee function. If knee pain going downstairs is limiting your activity, a physiotherapy assessment can help identify the cause and guide a suitable rehabilitation plan.

This information is general in nature and should not replace individual medical advice. If symptoms persist, consult a qualified healthcare professional.