Disclaimer: This article provides general information and is not a substitute for professional medical advice, diagnosis or treatment. Recovery and treatment needs vary between individuals. If you have ongoing or worsening symptoms, consult a qualified healthcare professional for personalised advice.
Knee pain that appears a few kilometres into a run can be easy to dismiss at first. Perhaps it settles once you stop, only to return on your next run or when you walk downstairs later that day. This pattern is often associated with runner’s knee, a common term for pain around or behind the kneecap.
Runner’s knee, often referred to as patellofemoral pain, doesn’t only affect runners. It can also occur in people who hike, cycle, play sport or have recently increased the amount of load placed through their knees.
Typical runner’s knee symptoms include a dull ache around the kneecap, discomfort with stairs or squats and pain after prolonged sitting. Treatment usually centres on identifying what has overloaded the knee, adjusting that load and improving the strength and control required for your usual activities.
Read on to learn more about runner’s knee symptoms, what can cause them and how treatment and rehabilitation can help you return to running.
What Is a Runner’s Knee?
Runner’s knee is a general term commonly used for patellofemoral pain, which refers to pain around the front of the knee and kneecap.
Your kneecap, or patella, sits at the front of the knee and moves within a groove in the thigh bone as you bend and straighten your leg. The joint experiences load whenever you walk, squat, climb stairs, run or jump.
That load is normal. Problems can arise when the demands placed on the knee exceed what the joint and surrounding muscles are currently prepared to tolerate.
For example, someone who normally runs 10 kilometres each week may suddenly increase to 25 kilometres while also adding hills. The knee may not have had enough time to adapt to that extra demand.
Runner’s knee is therefore not necessarily a sign that your knee is damaged or ‘worn out’. It often reflects a combination of load, strength, movement and individual factors.
What Are the Main Symptoms of Runner’s Knee?
Patellofemoral pain usually develops gradually rather than after a dramatic injury.
The most recognisable symptom is an ache around or behind the kneecap.
You may also notice:
- Pain during or after running
- Discomfort when you walk downstairs
- Pain with squats or lunges
- Symptoms after sitting with your knees bent for a long time
- Discomfort during hills
- Tenderness around the kneecap
- Clicking or grinding sensations in some cases
Pain may start only during harder exercise and later become noticeable during normal daily tasks if the knee remains irritated.
The exact location can also be difficult to pinpoint. Rather than one highly tender spot, you may describe a broader ache across the front of the knee.
Why Does Going Downstairs Often Hurt?
Pain on stairs, particularly when you go down, is a common complaint with runner’s knee. Your quadriceps have to control your body weight as your knee bends. This increases demand through the patellofemoral joint.
The same principle applies to:
- Downhill walks
- Deep squats
- Lunges
- Running downhill
- Repeated jumping
These activities aren’t inherently harmful. They simply place greater demand on the knee.
If your current capacity is lower than the load required, symptoms may appear.
Why Do Runners Develop Patellofemoral Pain?
There is rarely one single cause.
A Sudden Increase in Training
One of the first things we consider is whether your running load has recently changed.
This might include:
- More weekly kilometres
- Faster sessions
- Extra hill work
- More frequent runs
- A return after time away from exercise
Even positive changes to your fitness routine can cause problems when several are introduced at once.
Strength and Load Capacity
Your quadriceps, gluteal muscles and other lower-limb muscles help control forces through the knee.
If these muscles lack the strength or endurance required for your current running volume, the knee may become more sensitive.
Running and Movement Factors
Movement patterns can influence how load travels through the leg, but there is no single ‘correct’ running style that everyone must use.
We assess your movement in context rather than assuming one foot position or knee angle is automatically responsible for pain.
Recovery Between Sessions
Hard sessions need appropriate recovery.
Increasing your running volume while also reducing sleep, adding gym sessions or spending long hours on your feet can change the total amount of stress your body needs to manage.
Is Runner’s Knee the Same as a Knee Injury?
Not necessarily.
Runner’s knee often develops without a specific traumatic event. That differs from injuries such as an ACL sprain or some meniscus tears, which may follow a sudden twist, impact or change of direction.
A traumatic knee injury may involve rapid swelling, instability, locking or a clear moment when the injury occurred. On the other hand, patellofemoral pain often develops gradually and may relate to activities that repeatedly load the knee.
However, symptoms can overlap. If you’re unsure why your knee hurts, an assessment can help determine which structures may be involved.
Runner’s Knee Treatment: What Actually Helps?
Treatment isn’t simply about making the knee quiet for a few days. The aim is to help it tolerate the demands you intend to place on it, and that often requires a combination of load adjustment and progressive exercise.
Adjust Your Training Load
You don’t necessarily need to stop all activity.
If a 10-kilometre run consistently causes pain, for example, your current starting point might involve shorter distances, fewer sessions or temporarily reducing hills.
The right adjustment depends on:
- When your pain begins
- How intense it becomes
- How the knee feels afterwards
- Whether symptoms persist the next day
This allows you to stay active while giving the irritated knee a chance to settle.
Strengthen the Knee and Lower Limb
Strength exercises form an important part of runner’s knee rehabilitation.
Depending on your assessment, your program may include:
- Squats or modified squats
- Step-ups
- Controlled step-downs
- Leg press exercises
- Quadriceps exercises
- Hip and gluteal strengthening
- Calf exercises
Your exercises should progress as your knee becomes more capable. A runner who wants to return to hills, speed work or long-distance events will eventually need more than basic rehabilitation exercises.
Reintroduce Running Gradually
Returning to your previous weekly distance immediately after the pain settles can lead to another flare-up.
Instead, we usually recommend a progressive return.
You may start with a comfortable running distance and then increase one variable at a time. Distance, speed, frequency and elevation all contribute to overall load, so changing everything in the same week makes it harder to judge what your knee can tolerate.
The goal is to rebuild capacity rather than repeatedly test whether the pain has disappeared.
Consider Your Running Technique
Sometimes technique changes can be useful, but they are not automatically required for every case of runner’s knee.
At FlexiFit Physiotherapy, we may consider factors such as your stride, cadence, lower-limb control and the demands of your usual running environment where relevant.
Any change needs a clear reason. Trying to completely rebuild your running style based on generic online advice can simply move load from one area of the body to another.
Use Braces, Taping and Foam Rolling Carefully
These strategies may provide short-term support for some people, but they should not replace rehabilitation.
Taping may help reduce symptoms during certain activities. Foam rolling may temporarily change how tight the surrounding muscles feel. A brace may also have a role in selected cases.
However, these options do not replace the strength and load tolerance needed to return to running. We therefore view them as potential additions to treatment rather than the foundation of recovery.
How Long Does a Runner’s Knee Take to Improve?
There is no fixed recovery date.
A mild, recent episode may settle relatively quickly once training load is adjusted. Pain that has persisted for months may require a longer period of structured rehabilitation.
Your progress also depends on:
- How irritable the knee is
- Your current strength
- Your running goals
- How consistently you complete rehabilitation
- How well training load is managed
Instead of judging recovery only by pain, we also look at whether you can tolerate stairs, strength exercises and progressively more demanding runs.
When Should Knee Pain Be Assessed?
Consider a physiotherapy assessment if knee pain keeps returning, affects your normal training or starts to interfere with stairs, walking or other daily activities.
Prompt medical assessment is important if you experience severe pain after trauma, substantial swelling, an inability to bear weight, obvious deformity, significant locking or other sudden concerning symptoms.
These features may point to an injury other than typical patellofemoral pain.
Runner’s Knee Symptoms and Treatment: Final Thoughts
Runner’s knee commonly causes pain around or behind the kneecap during activities that place greater demand on the knee, including running, squatting, stairs and hills.
Treatment isn’t about finding one stretch or avoiding running forever.
The more useful approach is to understand why your knee has become sensitive, reduce excessive load where necessary and progressively rebuild the strength and capacity required for your activities.
For runners, that also means planning the return to distance, pace and hills rather than jumping straight back to your previous program once the pain improves.
Get Your Knee Ready for Running Again With FlexiFit Physiotherapy
If knee pain keeps appearing during your runs, the team at FlexiFit Physiotherapy can assess your symptoms, strength, movement and training demands to identify factors that may be contributing.
We can then develop a rehabilitation plan around your running goals, whether you’re returning to weekend runs, hills or a regular training schedule.
Call us on 02 8542 9507 or visit our Contact Us page to arrange an appointment.