Evidence-Based Sports Injury Care by Dr. Sean LeoSports Injury Specialist in Singapore

If you’ve ever felt a sharp or persistent ache just below your kneecap after a workout, practice, or game, you might be dealing with Patellar Tendonitis, commonly known as Jumper’s Knee. This overuse injury affects many athletes—especially those in high-impact sports like basketball, volleyball, and track—where explosive jumping and sudden direction changes are frequent.

Understanding the early signs, causes, and treatments of Jumper’s Knee is essential to avoid long-term damage and maintain peak athletic performance. In this guide, Dr. Sean Leo, Orthopedic Surgeon, explains what you need to know to recover effectively—and prevent this frustrating injury from coming back.

What is Patellar Tendonitis (Jumper’s Knee)?

Patellar tendonitis, also known as Jumper’s Knee, is a common overuse injury affecting the tendon that connects the kneecap (patella) to the shinbone (tibia). This tendon plays a crucial role in enabling knee extension, allowing activities like running, jumping, and squatting. The pain associated with this condition is often felt just below the kneecap, especially during physical activities.

The condition is typically seen in athletes who engage in high-impact or repetitive activities such as basketball, volleyball, or running, which involve a lot of jumping.

Symptoms of Patellar Tendonitis

The most common symptoms of patellar tendonitis include:

• Pain just below the kneecap, especially during or after physical activity.
• Swelling and tenderness in the patellar tendon.
• Pain that worsens with activities such as jumping, running, or squatting.
• Stiffness in the knee after prolonged periods of inactivity or rest.
• Weakness or instability in the knee when performing certain movements.

In severe cases, the tendon can become so damaged that it affects an individual’s ability to perform basic activities.

Causes of Patellar Tendonitis

Patellar tendonitis is caused by repetitive stress or overuse of the patellar tendon. The tendon can become irritated and inflamed from activities that involve sudden jumps or repeated pressure on the knee. Here are some key causes:

• Overuse: Repeated jumping or running, particularly without proper warm-up or recovery time.
• Sudden increase in activity: Rapidly increasing the intensity or frequency of physical activities can put excessive strain on the tendon.
• Weak thigh muscles: Imbalances in the muscles that support the knee, such as the quadriceps, can place added stress on the patellar tendon.
• Improper technique: Poor landing or jumping techniques can strain the tendon, especially in sports like basketball or volleyball.
• Tight muscles: Tightness in the hamstrings or calves can increase the tension on the patellar tendon, leading to injury.

Treatment for Patellar Tendonitis

Early diagnosis and treatment are critical in managing Jumper’s Knee and preventing further injury. Treatment options include:

• Rest: Giving the knee a break from physical activity is essential for recovery.
• Ice therapy: Applying ice to the affected area helps reduce inflammation and swelling.
• Compression: Wearing a knee brace or wrap can help alleviate pressure on the tendon.
• Elevation: Keeping the leg elevated helps minimize swelling.
• Physical therapy: Strengthening the quadriceps and improving flexibility can relieve pressure on the tendon.
• Anti-inflammatory medication: Nonsteroidal anti-inflammatory drugs (NSAIDs) can help reduce pain and inflammation.
• Injections: In more severe cases, corticosteroid or platelet-rich plasma (PRP) injections may be recommended to promote healing.
• Surgery: In rare cases where conservative treatments don’t work, surgery may be required to repair the damaged tendon.

Prevention Tips for Jumper’s Knee

To avoid developing patellar tendonitis, here are some prevention tips:

• Warm-up properly: Always warm up before intense physical activity to prepare your muscles and tendons for the strain.
• Gradually increase activity: Avoid sudden spikes in activity intensity to give your body time to adapt.
• Strengthen the knee: Focus on exercises that strengthen the quadriceps, hamstrings, and calf muscles to provide better support to the knee.
• Stretch regularly: Stretching the muscles around the knee can reduce the strain on the patellar tendon.
• Use proper technique: Ensure correct jumping and landing techniques during physical activities to reduce the risk of injury.

Don’t Ignore the Signs of Jumper’s Knee

Patellar Tendonitis may start as a minor ache, but ignoring the symptoms can lead to chronic pain and reduced performance on and off the field. The good news? With early intervention, targeted treatment, and a focus on strength and flexibility, most athletes recover fully and return to their sport stronger than before.

Whether you’re managing existing knee pain or want to prevent Jumper’s Knee, paying attention to your body, using proper technique, and following a structured conditioning plan are key. If pain persists or worsens, don’t hesitate to consult an orthopedic specialist for a personalized recovery plan.