Could It Be Patellofemoral Pain Syndrome?
In daily clinical practice, anterior knee pain is one of the most common reasons young adults visit an orthopedic clinic.
“It hurts especially when going down stairs.”
“My knee feels sore when I stand up after sitting for a while.”
“I feel sharp pain in the front of my knee when I run or squat.”
Many of these patients have already undergone X-rays or MRI scans at another clinic.
However, they are often told that no clear abnormal findings were identified.
In such cases, one of the most common diagnoses is
Patellofemoral Pain Syndrome (PFPS).
What Is Patellofemoral Pain Syndrome?
Patellofemoral pain syndrome refers to pain that occurs between the patella (kneecap) and the femur (thigh bone).
This pain is usually caused by:
- abnormal movement of the patella
- muscular imbalance
- repetitive mechanical stress
Unlike knee osteoarthritis, this condition is not caused by severe cartilage loss,
and it is not associated with fractures or ligament tears.
In most cases, PFPS is related to functional problems rather than structural damage.
What Symptoms Are Common?
Typical symptoms of patellofemoral pain syndrome include:
● Pain in the front of the knee
● Pain that worsens when going downstairs
● Discomfort when standing up after prolonged sitting
● Pain during squatting or lunging movements
The pain is often intermittent rather than constant and tends to appear mainly during stair use or physical activity.
Significant knee swelling or a sensation of instability is uncommon.
Why Does This Pain Occur?
Patellofemoral pain syndrome rarely develops from a single cause.
Multiple factors often contribute, including:
● Imbalance of thigh muscles (especially weakness of the vastus medialis)
● Weak hip and gluteal muscles
● Overuse from running, hiking, or stair training
● Sudden increase in physical activity
● Poor movement patterns or posture
These factors can cause the patella to move slightly off its normal tracking path,
leading to repetitive stress and irritation during knee motion.
This condition is frequently seen in young men whose activity level increases suddenly —
for example, after starting military training — and typically presents as anterior knee pain.
Why Do Imaging Tests Often Look Normal?
In the early stage of PFPS, X-rays and MRI scans often appear normal.
In many patients, the pain develops not because something is torn or broken, but because the knee is not moving efficiently.
This does not mean that the pain is imaginary.
Rather, the primary problem is functional dysfunction, not visible structural damage.
For this reason, diagnosis relies more heavily on:
- symptom pattern
- physical examination
- pain behavior during movement
A simple self-check can be performed at home by gently pressing and rubbing around the patella with the knee fully extended.
If pain is reproduced on one side compared with the other, patellofemoral pain syndrome may be suspected.
How Is It Treated?
Fortunately, surgery is rarely required for patellofemoral pain syndrome.
Treatment usually focuses on:
● Pain control with medication or injections when necessary
● Activity modification to reduce knee overload
● Strengthening of the thigh and hip muscles
● Stretching and structured rehabilitation exercises
Among these, exercise-based rehabilitation is the most important component.
Simply resting without proper rehabilitation often leads to delayed recovery.
Anterior knee pain is just one pattern among many types of knee pain.
To better understand other possible causes and when medical evaluation is recommended, you can review this overview article:
👉 My Knee Hurts — What Could Be the Problem?
A final message from the clinic
Although patellofemoral pain syndrome may not appear serious at first,
untreated symptoms can persist and limit physical activity over time.
On the other hand, when the underlying causes are properly addressed and rehabilitation is performed consistently,
most patients experience significant improvement.
What matters most is not the imaging result itself,
but how the knee functions during daily movement.
If anterior knee pain continues or recurs,
it is better not to ignore it as simple muscle soreness,
but to seek evaluation from an orthopedic specialist for appropriate treatment and guidance.
Leave a Reply