Patellar Tendinitis: Causes, Symptoms, and Treatment for Jumper’s Knee

Do you experience pain at the front of your knee during jumping, running, squatting, or climbing stairs? You may be dealing with patellar tendinitis, commonly known as jumper’s knee.

Patellar tendinitis is one of the most common overuse injuries seen in athletes who participate in sports that involve repetitive jumping, sprinting, and rapid changes in direction. Fortunately, with the right treatment approach, most athletes can recover successfully and return to their sport stronger than before.

What Is Patellar Tendinitis?

Patellar tendinitis is an overuse injury that occurs when repetitive stress is placed on the patellar tendon without allowing adequate time for recovery and adaptation.

The patellar tendon connects the kneecap (patella) to the shin bone (tibia) and plays a critical role in movements such as:

• Running
• Jumping
• Landing
• Sprinting
• Cutting and changing direction
• Squatting

Every jump, sprint, and landing creates significant force through the tendon. When training demands exceed the tendon’s ability to tolerate stress, irritation can develop. Over time, continued overload may lead to tendon degeneration and chronic tendinopathy.

Who Is Most at Risk?

Patellar tendinitis is especially common among athletes who perform explosive lower-body movements, including:

• Basketball players
• Volleyball athletes
• Soccer players
• Track and field athletes
• Runners
• CrossFit athletes

Athletes who suddenly increase training intensity, frequency, or volume are at an even greater risk of developing symptoms.

Common Symptoms of Patellar Tendinitis

Individuals with patellar tendon pain often report:

✔️ Pain at the front of the knee
✔️ Tenderness directly below the kneecap
✔️ Discomfort with jumping or landing
✔️ Pain during running or sprinting
✔️ Increased symptoms while squatting or climbing stairs
✔️ Stiffness and soreness following activity

In younger athletes who are still growing, pain may occur closer to the tendon attachment on the shin bone and can sometimes be associated with Osgood-Schlatter disease. Adults more commonly experience pain directly beneath the kneecap.

What Causes Patellar Tendon Pain?

While repetitive jumping and running are often the primary contributors, other underlying factors can increase stress on the tendon.

Common contributors include:

Weak Glute Muscles

Reduced hip strength can alter movement patterns and increase the load placed on the knee.

Limited Hip and Ankle Mobility

Restrictions in mobility can change mechanics during squatting, running, and landing, forcing the patellar tendon to absorb more stress.

Poor Landing Mechanics

Improper force absorption during jumping and landing can overload the tendon repeatedly.

Sudden Training Changes

Rapid increases in training volume, intensity, or frequency can exceed the tendon’s capacity to recover.

Muscle Imbalances

Strength deficits throughout the lower extremity can alter movement efficiency and increase strain on the knee.

How Is Patellar Tendinitis Treated?

One of the most effective treatments for chronic patellar tendon pain is a progressive loading program.

Research consistently supports the use of slow, controlled resistance exercises to stimulate tendon healing and improve its ability to tolerate force.

Treatment often includes:

• Progressive strengthening exercises
• Load management strategies
• Hip and ankle mobility training
• Movement retraining
• Jumping and landing mechanics
• Gradual return-to-sport progression

At Athlete Restoration Company, we focus on identifying and treating the root cause of tendon pain—not just the symptoms.

Our physical therapists assess:

• Movement quality
• Strength deficits
• Mobility restrictions
• Sport-specific demands
• Training habits

This allows us to create individualized treatment plans that restore function, improve performance, and reduce the risk of recurrence.

Don’t Ignore Front Knee Pain

Many athletes try to push through patellar tendon pain, hoping it will resolve on its own. Unfortunately, tendon issues often become more difficult to manage when left untreated.

Early intervention can help:

✔️ Reduce pain
✔️ Improve tendon health
✔️ Restore strength and power
✔️ Prevent chronic symptoms
✔️ Get athletes back to sport faster and with greater confidence

The Bottom Line

Patellar tendinitis is a common but highly treatable condition. Addressing symptoms early and following a structured rehabilitation program can make a significant difference in both recovery and long-term performance.

If you’re experiencing persistent knee pain during training or competition, our team at Athlete Restoration Company can help identify the underlying cause and develop a personalized plan to get you back to doing what you love—pain free and performing at your best.