Patellofemoral pain is a general term used to describe pain that resides in the front of the knee and around the kneecap, also known as the patella. Patellofemoral Pain Syndrome, PFPS, is also known as both runners’ and jumpers’ knee due to the type of athletes who commonly complain of the problem. Based on the nicknames of PFPS, most people tend to believe that it can only occur in athletes or those who participate in high intensity sports, however it can also occur in the older and more sedentary populations.
So What Causes PFPS?
Common causes include:
- Sudden change in physical activity
- Increased frequency of physical activity whether in duration or intensity
- Patellar malalignment
- Improper technique
- Muscular imbalances
Most commonly, this condition is caused by repetitive stress on the knee joint while performing high intensity exercises such as jumping, squatting and running.
During the jumping, squatting and running activities, the kneecap is repeatedly moving throughout the patellar groove. As the kneecap travels through the range of motion to complete each exercise, the backside of the kneecap starts to rub against the end of the thigh bone, also known as the femur. This causes that pain.
Although high levels of activity are often looked at as the primary cause, anatomical issues can be the root of the problem as well.
- Patellar malalignment; the kneecap simply does not sit properly in its groove.This malalignment could be from skeletal alignments, such as flat feet, which causes additional medial stress on the knees, or abnormally wide hips, which could also increase the load angle.
- Muscular imbalances can also contribute to knee pain. For instance, if the outer quadriceps, and/or IT band, are tighter than the inside musculature, the kneecap is going to be pulled to the outer edge of the groove, creating uneven wear in the back of the kneecap.
Symptoms of PFPS
Some common symptoms of PFPS include but are not limited to:
- Anterior knee pain (often dull and achy)
- Swelling in the knee joint
- Stiffness
- Increased pain with activities that repeatedly involve knee flexion
- Increased pain with prolonged sitting in knee flexion
- Crackling sounds when going up stairs or standing after prolonged sitting.
When these symptoms arise, it becomes a hassle to climb the stairs in your home, make that 30-60 minute commute to work, exercise and even get down on the floor to play with your kids.
The Anatomy of the Knee
The knee joint consists of three major parts:
- The lower end of the femur (thigh bone)
- The end of the tibia (shin bone)
- The patella (kneecap)
In addition to these three bony structures, cartilage and ligaments connect the bones together and provide additional stability inside of the knee joint.
- The cartilage in the knee joint provides smooth surfaces that allow for fluid movement,
- The ligaments create stability through multi-directional movement.
When talking about PFPS, we often are talking about a knee joint that does not have enough cartilage behind the knee cap. This causes the two bony prominences to roughly grind together.
How to Handle PFPS
Instead of going through the daily tasks of life while suffering in pain and sacrificing the things that you want or need to do…
Call Loudoun Sports Therapy Center at, 703-450-4300 to schedule your evaluation.
During your evaluation, one of our expert physical therapists will spend an hour determining the problem and its causes. They will then put together a personalized rehabilitation plan to significantly decrease your pain and inflammation, increase your range of motion, strengthen your knees and the surrounding areas that attribute to your problem and get you back to living life pain free!
By Cierra Washington, ATC
CLICK HERE for more on how physical therapy can help.
