| What We Treat
Patellofemoral Pain
Aching at the front of the knee on stairs, hills and after sitting still too long? Patellofemoral pain is the most common knee problem there is — and it responds well to strength, not rest.
Overview
What Is Patellofemoral Pain?
Patellofemoral pain is pain arising from the joint between the kneecap and the thigh bone. The kneecap runs in a groove at the front of the femur, and the forces passing through that joint are considerable — several times body weight when descending stairs. Pain here is usually a mismatch between the load going through the joint and the capacity of the muscles controlling it, rather than evidence of damage.
Tap a structure, or use the buttons, to see what contributes.
The Patellofemoral Joint
The kneecap glides in a groove on the thigh bone, acting as a pulley for the quadriceps. Compressive load through the joint rises steeply as the knee bends under weight — which is exactly why stairs, squatting and hills are the classic aggravators.
Symptoms
How It Tends to Feel
Patellofemoral pain has a recognisable signature that separates it from most other knee problems:
Diffuse Front-of-Knee Pain
Hard to point to precisely — people often cup their hand over the kneecap rather than indicating one spot.
Worse Going Downstairs
Descending stairs and hills is typically worse than ascending, because the load is absorbed rather than generated.
The Cinema Sign
Aching after sitting with the knee bent for a long period, easing once you get up and move.
Squatting and Kneeling
Deep knee bend under load is a consistent aggravator, as is kneeling for gardening or DIY.
Grinding or Clicking
Common, usually harmless, and not a marker of severity.
Both Knees Sometimes
It quite often affects both knees, which points away from a single structural injury.
Causes & Risk Factors
What Drives It
Patellofemoral pain is a load problem. Several factors influence how much load reaches the joint and how well it’s tolerated.
A Change in Load
A new running programme, a house move, a walking holiday or a return to sport after time off is the most common trigger.
Quadriceps Weakness
Reduced quadriceps strength and endurance means the muscle absorbs less of the load and the joint absorbs more.
Hip Muscle Weakness
Gluteal weakness allows the thigh to rotate and drop inwards, altering how the kneecap tracks.
Rapid Growth or Body Composition Change
Common in adolescents during growth spurts, and relevant after significant weight change in adults.
Footwear and Surface
Changes in shoes, or a switch to harder or more cambered surfaces, can be enough to tip a knee that was coping.
The Plan
How the Programme Progresses
Patellofemoral pain responds to progressive loading. The entry point is set by what you can currently tolerate, and it builds from there.
Settle
Reduce irritability, start loading
- Identify and temporarily modify the specific aggravating tasks — often stairs volume or running distance
- Begin quadriceps loading in ranges you tolerate, often with a limited knee bend angle
- Start gluteal strengthening straight away
- Taping or a simple brace can help some people load more comfortably in the short term
Tap through the stages. Timelines are typical — yours is set by your response, not the calendar.
How We Can Help You
Treatment & Management
This condition responds well to a properly dosed strengthening programme. The difficulty is that it takes months and most people stop too early — which is exactly where having someone progressing it with you pays off.
What the evidence says
International consensus statements on patellofemoral pain identify exercise therapy as the intervention with the strongest supporting evidence, and specifically recommend combining hip and knee targeted exercise, which outperforms knee exercise alone.
Foot orthoses have short-term benefit in some people and can be a useful adjunct. Passive treatments such as electrotherapy have little supporting evidence and are not recommended as standalone treatment.
When to Seek Help
Red Flags — Don’t Ignore These
Front-of-knee pain is almost always benign. These features need assessment:
⚠ Seek prompt medical assessment if you notice:
- A hot, red, swollen knee with fever or feeling generally unwell (possible joint infection — seek emergency care)
- A knee that locks in a bent position and cannot be straightened
- Significant swelling appearing within hours of an injury
- Inability to weight-bear, or an obvious deformity of the kneecap
- Night pain that is constant and unrelated to position, particularly in an adolescent or someone with a history of cancer
These symptoms can point to a cause that needs medical rather than physiotherapy assessment. Please don’t wait for a physiotherapy appointment — contact your GP, call 111, or attend A&E as appropriate.
Common Questions
Frequently Asked Questions
Is my kneecap out of line?
Almost certainly not in any meaningful sense. Kneecap position varies enormously between people, correlates poorly with pain, and cannot be permanently changed by exercise or taping. The good news is that it doesn’t need to be — symptoms improve by changing load and capacity.
Should I stop running?
Usually not entirely. Reducing volume, avoiding hills and downhills temporarily, and adding strength work is far more productive than stopping. Complete rest reduces the knee’s capacity further, so the same run hurts more when you go back.
Why are you giving me hip exercises?
Because the position of the thigh bone determines how the kneecap sits in its groove. Gluteal weakness lets the thigh drop and rotate inwards under load. Programmes combining hip and knee work consistently beat knee-only programmes.
How long will this take?
Most people notice meaningful change within six to twelve weeks, with continued improvement over three to six months. Muscle takes time to adapt. The commonest reason for it not working is stopping at week five.
Get the Front of Your Knee Sorted
A proper strength assessment, a programme dosed to actually work, and someone progressing it with you through the months that matter.
Book Your Initial AssessmentThis page is for general information only and isn’t a substitute for individual medical advice. If you’re experiencing any of the warning signs above, contact your GP or seek emergency medical care as appropriate.