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Runner’s Knee
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KneePatellofemoral Pain Syndrome

Runner’s Knee

Pain around or behind the kneecap, often worse with stairs, hills, squats, or sitting for long periods.

Runner’s Knee is one of the most common running injuries, especially when training load increases faster than the knee is ready for.

Pain Area

Knee

Medical Name

Patellofemoral Pain Syndrome

Can You Run?

Usually yes, modified

Typical Recovery

2-6 weeks

Common Onset

Gradual

Can I Keep Running?

You can often keep some running if the pain stays mild, doesn’t change the way you run, and settles back to normal by the next day. If stairs, sitting, or easy jogging are all getting progressively worse, you usually need to reduce your load.

Typical Recovery Timeline

Some runners don’t need to stop completely, but many need 2 to 6 weeks of reduced running , with a more complete rebuild often taking 6 to 12 weeks .

Clinical Pathology

What's Actually Going On?

Runner’s Knee is pain coming from the joint between the kneecap (patella) and the thigh bone (femur) .

In runners, this is usually not a dramatic injury and not necessarily a sign that something is badly damaged. More often, it’s a load problem — the kneecap and surrounding tissues are being asked to handle more compression and repetition than they’re currently ready for.

This often shows up when training changes faster than your body can adapt.

Common Symptoms

Pain around or behind the kneecap
Front-of-knee ache during or after running
Pain with stairs
Pain with squats or lunges
Discomfort after sitting for long periods
Symptoms that build with training load
Load Management

Can You Still Run With It?

Usually yes — but often with modifications.

Many runners can keep running if symptoms stay manageable and the knee isn’t getting progressively worse.

Things That Often Need Adjusting:

01.Weekly mileage
02.Speed work
03.Hills
04.Long Runs
05.Running Frequency
Pattern Recognition

Does This Sound Like You?

  • Pain around or behind the kneecap
  • Pain that builds with stairs, hills, speed work, or downhill running
  • Discomfort after sitting for too long
  • A knee that feels irritated rather than unstable
  • Mild stiffness, but usually not major swelling
A big clue is the pattern: It often starts as a manageable niggle… then slowly becomes the thing you can’t ignore.

Why Do Runners Get This?

Runner’s Knee usually doesn’t come out of nowhere. It tends to show up when load quietly outruns capacity.

• A sudden jump in training volume
• More hills, speed sessions, or downhill running
• Reduced quad or hip strength
• Returning too quickly after a break
• Running mechanics that increase stress on the knee, like overstriding or low cadence in some runners

Most of the time, this is a “too much, too soon” problem — not a “you’re broken” problem.

Worth Getting Assessed If:

  • •Symptoms last longer than 2 to 3 weeks
  • •The knee starts to swell
  • •You struggle to go down stairs
  • •Running is becoming more painful instead of better

Get Help Sooner If You Have:

  • Locking
  • Instability / giving way
  • Significant swelling
  • A major twist injury
  • Trouble fully straightening the knee
  • Sharp pain focused on one spot rather than general kneecap pain
Liesel Janse van Rensburg
Clinical Perspective

A Note From Liesel

“I have met so many runners who treated this like a tiny annoyance until stairs, car rides and race week all became miserable. The ones who do best are rarely the toughest; they are the ones who listen early, get stronger, and stop negotiating with pain that keeps sending the same message.”

How to Treat Runner’s Knee

Download Liesel's structured rehabilitation & exercise guide in PDF format.

Download Rehab Plan (PDF)
Not Sure If It's Runner’s Knee?

Stop Guessing. Start Moving Forward.

Get a clear clinical diagnosis and a personalised return-to-running plan with Liesel (In-person in Pretoria East or Online via Google Meet).

Book a Consultation