What Is Runner’s Knee and What Causes It

Author : Kingsland Osteo | Published On : 25 Apr 2026

You do not have to be a runner to develop Runner’s Knee. It often starts as a small problem. Maybe your knee hurts after a long walk, or you feel a dull pain when going downstairs. At first, most people ignore it. They stretch a little, rest for a day or two, and assume it will go away. Then the pain comes back, usually a little worse than before. 

This is how overuse injuries usually begin. Not with a major injury, but with something small that slowly gets worse over time. Runner Knee is one of the most common examples of this, and it affects more than just runners. Athletes, gym-goers, and even office workers who sit for long hours can develop Runner’s Knee. 

What Runner’s Knee Actually Is 

Runners Knee is the common name for pain around the front of the knee, usually caused by the kneecap not moving smoothly over the joint. The medical term often used is patellofemoral pain syndrome, but most people in sports and rehabilitation settings simply call it Runner’s Knee. 

The pain is typically felt: 

  • Around or behind the kneecap  

  • When going up or down stairs  

  • During squats or lunges  

  • After sitting for long periods  

  • During or after running  

What makes this condition frustrating is that there is rarely just one cause. It is usually a combination of movement patterns, muscle imbalances, and training habits. 

Why It Happens More Than People Think 

Many people assume knee pain means there is something wrong with the knee itself. The knee often becomes painful because of what is happening above and below it. 

Some common causes of Runner’s Knee include: 

  • Tight hip flexors  

  • Weak glute muscles  

  • Poor foot mechanics  

  • Sudden increases in training  

  • Running on uneven surfaces  

  • Sitting for long hours with bent knees  

If the hips are not working properly, the knee ends up taking extra stress. Over time, that stress turns into irritation and pain. This is why treatment often focuses on the entire leg, not just the knee. 

The Role of Movement and Alignment 

One of the most overlooked parts of Runner’s Knee is movement control. The way your foot lands, the way your hip stabilizes, and the way your pelvis moves all effect how force travels through your knee. 

This is also where treatments like Cranial Osteopathy can help. While it might sound unrelated to the knee, osteopaths look at the body as a connected system. Tension, posture, and alignment in one area can affect movement somewhere else. 

Clinics that treat Runner’s Knee often assess: 

  • Hip stability  

  • Pelvic alignment  

  • Lower back movement  

  • Foot mechanics  

  • Posture and gait  

Sometimes knee pain is just the symptoms, not the root cause. Clinics like Kingsland Osteo focus on identifying the underlying cause of runner’s knee rather than just treating the symptoms. You can learn more at: https://kingslandosteopaths.co.nz 

Why Office Workers Get Runner’s Knee Too 

It sounds surprising, but office workers are actually quite prone to Runner’s Knee. Sitting for long hours keeps the knees bent and the hip flexors tight. Over time, this changes how the legs move when walking, running, or exercising. 

Someone might sit all day and then go for a run in the evening, but their body is not moving as smoothly as it should. The knee ends up taking more load than it was designed to handle. 

This is why treatment and prevention often include: 

  • Strengthening the glutes and hips  

  • Improving ankle mobility  

  • Adjusting training load  

  • Looking at posture and workstation setup  

  • Manual therapy where needed  

If knee pain keeps coming back, it is usually a sign that something in your movement needs to be addressed. Clinics like Kingsland Osteo assess how the hips, knees, and feet work together, which is often key to long-term recovery.