Why Do My Knees Hurt Going Down The Stairs?
Have you ever noticed that walking on flat ground feels fine, but the moment you start walking downstairs, your knee begins to ache?
You’re not alone. Knee pain when going down stairs is one of the most common complaints we see at Back to Health Physiotherapy. It can affect people of all ages—from runners and gym-goers to busy parents and older adults.
The good news is that this type of pain is usually treatable, especially when the underlying cause is identified early.
Why does my knee hurt more going downstairs?
Walking downstairs places greater demands on your knees than many people realise.
Each step requires your quadriceps (the muscles at the front of your thigh) to work hard to control your body’s weight as you lower yourself. This increases the forces passing through the kneecap (patella) and the surrounding muscles, tendons and cartilage.
If these tissues become irritated or aren’t coping well with the loads being placed on them, pain can develop.
For many people, stairs are one of the first activities to expose a knee problem because they challenge the knee more than walking on level ground.
What are the most common causes?
Several conditions can cause pain when walking downstairs, including:
Patellofemoral Pain Syndrome (Runner’s Knee)
One of the most common causes, especially in younger and active adults.
Pain is usually felt around or behind the kneecap and often becomes worse when:
- Walking downstairs
- Squatting
- Running
- Sitting for long periods
- Getting up from a chair
Despite its name, you don’t have to be a runner to develop it.
Knee Osteoarthritis
For older adults, arthritis is another common cause of stair-related knee pain.
While arthritis involves changes within the joint, research consistently shows that keeping active and strengthening the muscles around the knee can significantly improve pain and function.
Having arthritis does not automatically mean you need surgery.
Patellar Tendon Pain
Pain just below the kneecap may be related to the patellar tendon.
This is often seen in people who perform lots of jumping, sprinting or heavy gym training.
Meniscus Irritation
The meniscus is a piece of cartilage that helps absorb shock inside the knee.
Sometimes it can become irritated following a twist, awkward movement or gradual overload, making stairs uncomfortable.
A thorough assessment can help determine whether the meniscus is involved or if another structure is contributing to your symptoms.
Does knee pain mean I’ve damaged something?
Not necessarily.
Pain doesn’t always equal damage.
Sometimes the tissues around the knee simply become more sensitive because they’ve been asked to do more than they’re currently prepared for.
Examples include:
- Increasing your running distance too quickly
- Starting a new gym program
- Returning to exercise after time off
- Spending long periods sitting before becoming more active
- Repeated kneeling or squatting at work
Understanding why the knee is painful is often more important than focusing on what scan results might show.
Should I stop exercising?
Usually, no.
Completely resting the knee can lead to reduced strength and make returning to activity more difficult.
Instead, the goal is to temporarily reduce activities that significantly increase pain while continuing to move as much as comfortably possible.
This may include:
- Reducing running volume for a short period
- Modifying squats or lunges
- Using handrails when walking downstairs if needed
- Cycling or swimming as lower-impact alternatives
- Continuing a strengthening program
Keeping the knee active helps maintain muscle strength and supports recovery.
Can strengthening exercises help?
Absolutely.
Research consistently shows that exercise is one of the most effective treatments for many common knee conditions.
Strong muscles around the hips, thighs and calves help absorb force and reduce stress on the knee joint.
Depending on your assessment, your physiotherapist may prescribe exercises targeting:
- Quadriceps strength
- Gluteal (hip) muscles
- Hamstrings
- Calf muscles
- Balance and movement control
These exercises are progressed gradually as your knee becomes stronger and more confident.
How physiotherapy can help
At Back to Health Physiotherapy, we don’t just look at where your knee hurts—we look at why it’s happening.
Your physiotherapist will assess:
- Your walking pattern
- Strength and flexibility
- Balance and movement control
- Hip, knee and ankle function
- Training or sporting loads
- Everyday activities that may be contributing
Treatment may include:
- Hands-on treatment where appropriate
- Individualised strengthening exercises
- Advice on modifying activities without completely stopping
- Improving movement technique for stairs, running or gym exercises
- A progressive return-to-activity program
The aim is not simply to settle your pain but to improve your knee’s ability to cope with everyday life and exercise.
When should you seek professional advice?
It’s worth seeing a physiotherapist if:
- Your knee pain has lasted more than a couple of weeks.
- Stairs are becoming increasingly difficult.
- Your knee keeps swelling.
- The pain is stopping you from exercising.
- Your knee feels unstable or gives way.
- You’re unsure whether it’s safe to continue being active.
Early assessment often means a quicker recovery and can help prevent a small problem from becoming a persistent one.
Frequently Asked Questions
Why does my knee only hurt going downstairs?
Walking downstairs places greater force through the kneecap than level walking, making it one of the first activities to become painful when the knee is irritated.
Is walking upstairs easier on the knees?
Often, yes. Going downstairs generally requires more controlled lowering of your body weight, increasing the load through the knee joint.
Should I avoid stairs?
Not necessarily. If stairs are very painful, temporarily reducing how often you use them may help, but complete avoidance is rarely needed. Gradually reintroducing them as your strength improves is usually the best approach.
Will wearing a knee brace fix the problem?
A brace may provide short-term comfort for some people, but it doesn’t address the underlying cause. Exercise and improving your knee’s capacity are usually the most effective long-term solutions.
Can physiotherapy help if I have arthritis?
Yes. Exercise therapy is considered one of the best treatments for knee osteoarthritis and can improve pain, strength and mobility without relying solely on medication.
Don’t let knee pain slow you down
Whether you’re struggling with stairs, squatting, running or simply getting around comfortably, knee pain doesn’t have to become part of everyday life.
The team at Back to Health Physiotherapy can assess the cause of your symptoms, develop a personalised treatment plan and help you return to the activities you enjoy with greater confidence.