Have you noticed a sharp ache just below your kneecap when walking, running, climbing stairs, or exercising? Pain in this area can make everyday movements uncomfortable, especially when your knees are under repeated stress.

One possible cause is patellar tendonitis, sometimes called jumper’s knee. This condition affects the tendon connecting your kneecap to your shinbone and commonly develops in people who participate in activities involving jumping, running, or repetitive knee movements.

However, you don’t have to be an athlete to experience patellar tendon pain. Changes in activity levels, repetitive strain, and certain movement patterns can contribute to discomfort below the kneecap.

At Spine Correction Center, we understand how frustrating knee pain can be when it interferes with your daily routine. Understanding what causes patellar tendonitis, recognizing its symptoms, and exploring conservative treatment options can help you take steps toward improved comfort and mobility.

What Is Patellar Tendonitis?

Patellar tendonitis is a condition involving irritation and pain in the patellar tendon, a strong band of connective tissue that connects the bottom of the kneecap (patella) to the shinbone (tibia).

The patellar tendon works with the quadriceps muscles to help straighten your knee. This makes it essential for activities such as walking, running, jumping, squatting, and climbing stairs.

When the tendon experiences repeated loading without adequate recovery, it can become painful.

Although the term patellar tendonitis is widely used, many persistent cases are more accurately described as patellar tendinopathy. This term reflects changes in the tendon associated with repetitive loading rather than inflammation alone.

Patellar tendon problems can range from mild discomfort during exercise to persistent pain that affects everyday activities.

What Causes Patellar Tendonitis?

Patellar tendonitis typically develops when repeated stress on the tendon exceeds its ability to recover and adapt.

Several factors may contribute to this imbalance.

Repetitive Jumping and Running

Activities involving frequent jumping, landing, sprinting, or sudden changes in direction place significant demands on the patellar tendon.

Sports such as basketball, volleyball, soccer, and track and field commonly involve these movements.

Over time, repetitive loading may contribute to tendon pain, particularly when training intensity increases without adequate recovery.

Sudden Increases in Physical Activity

Starting a new exercise routine or significantly increasing workout intensity can place additional stress on the knees.

For example, adding more running mileage, jumping exercises, or squats without gradually building strength may increase the risk of developing patellar tendon discomfort.

Muscle Weakness or Reduced Flexibility

The muscles surrounding your hips, thighs, and knees help control movement and distribute forces through the lower body.

Reduced strength, limited flexibility, or changes in movement mechanics may affect how the patellar tendon is loaded during activity.

These factors don’t necessarily cause tendonitis on their own, but they may contribute to symptoms in some individuals.

Inadequate Recovery Time

Tendons need time to adapt to physical activity.

Repeated high-impact exercise without sufficient recovery may contribute to persistent irritation and discomfort.

Previous Knee Injuries

A history of knee pain or injury may influence movement patterns and the way forces are distributed through the knee.

In some cases, this may contribute to additional stress on the patellar tendon.

Common Symptoms of Patellar Tendonitis

The most recognizable symptom of patellar tendonitis is pain located just below the kneecap.

However, the severity and timing of symptoms can vary.

Common signs include:

  • Pain or tenderness directly below the kneecap

  • Discomfort during jumping, running, or squatting

  • Pain when climbing or descending stairs

  • Stiffness after sitting or resting

  • Tenderness when pressing on the patellar tendon

  • Discomfort that increases with repeated activity

  • Reduced tolerance for exercise or sports

In the early stages, pain may occur primarily during or after physical activity.

As symptoms progress, discomfort may become more noticeable during routine movements.

Persistent pain should be evaluated to determine whether patellar tendinopathy or another knee condition is responsible.

Why Does Patellar Tendonitis Hurt Below the Kneecap?

The patellar tendon is located directly beneath the kneecap, which explains why pain from this condition is typically felt in that area.

When you straighten your knee, your quadriceps muscles generate force that travels through the kneecap and patellar tendon to the shinbone.

Activities such as jumping, landing, squatting, and climbing stairs increase the load placed on this tendon.

If the tendon has become sensitive to repeated loading, these movements may trigger discomfort.

The pain is often localized rather than spread throughout the entire knee.

However, not all pain below the kneecap is caused by patellar tendonitis. Other conditions can produce similar symptoms, making an accurate diagnosis important.

Is It Patellar Tendonitis or Another Knee Problem?

Several conditions can cause pain around or below the kneecap.

Understanding the differences can help explain why a professional evaluation may be necessary.

Patellofemoral Pain Syndrome

Patellofemoral pain syndrome commonly causes discomfort around or behind the kneecap.

Symptoms may become noticeable during squatting, stair climbing, running, or prolonged sitting.

Unlike patellar tendonitis, which often causes localized tenderness below the kneecap, patellofemoral pain may feel more widespread.

Infrapatellar Bursitis

Bursae are small fluid-filled sacs that help reduce friction between tissues.

Inflammation of a bursa near the patellar tendon can cause localized swelling and discomfort below the kneecap.

Osgood-Schlatter Disease

Osgood-Schlatter disease is a common cause of knee pain in growing adolescents, particularly those participating in running and jumping sports.

It typically causes pain and tenderness over the bony bump below the kneecap where the patellar tendon attaches to the shinbone.

Patellar Tendon Tear

A partial or complete patellar tendon tear is a more serious injury that may occur during a sudden forceful movement.

Symptoms can include a popping sensation, immediate pain, swelling, and difficulty straightening the knee.

A suspected tendon tear requires prompt medical evaluation.

Who Is Most at Risk for Patellar Tendonitis?

Although patellar tendonitis is frequently associated with athletes, it can affect individuals with different activity levels.

People who may be at increased risk include:

  • Basketball and volleyball players

  • Runners and recreational athletes

  • Individuals who frequently jump or squat

  • People who rapidly increase exercise intensity

  • Those returning to physical activity after a break

  • Individuals with reduced lower-body strength or altered movement mechanics

The condition is particularly common in sports involving repetitive jumping, but anyone placing repeated stress on the patellar tendon may develop symptoms.

How Is Patellar Tendonitis Diagnosed?

Diagnosing patellar tendonitis typically begins with a review of your symptoms, activity history, and a physical examination.

A healthcare professional may ask:

  • Where is your knee pain located?

  • When did the discomfort begin?

  • Which movements make it worse?

  • Have you recently increased your activity level?

  • Have you experienced previous knee injuries?

During the examination, the provider may assess tenderness, knee movement, strength, and functional activities such as squatting.

Imaging is not always necessary, but ultrasound or MRI may be recommended when the diagnosis is unclear, symptoms persist, or a more significant tendon injury is suspected.

Can Chiropractic Care Help With Patellar Tendonitis?

Chiropractic care may play a supportive role in a conservative treatment plan for some individuals experiencing knee pain.

Because the knee works together with the hips, ankles, and surrounding muscles, evaluating movement throughout the lower body may help identify factors contributing to excessive tendon loading.

At Spine Correction Center, a conservative approach to musculoskeletal discomfort may include assessing joint movement, muscle function, and activity-related limitations.

Depending on the patient’s needs and the services available, care may involve:

Movement and Functional Assessment

Evaluating how you walk, squat, or perform other movements may help identify limitations or patterns that contribute to knee discomfort.

Joint Mobility Care

When appropriate, manual therapy or joint-focused treatment may help address associated mobility restrictions.

However, joint adjustments alone do not repair a damaged tendon.

Soft Tissue Techniques

Certain hands-on techniques may help manage muscle tension or associated discomfort.

These approaches are generally considered supportive rather than primary treatments for patellar tendinopathy.

Rehabilitation and Strengthening Guidance

Progressive exercise is an important component of managing patellar tendinopathy.

A structured strengthening program can help improve the tendon’s tolerance for physical activity over time.

Treatment should be individualized, and patients may benefit from coordinated care with a physical therapist, sports medicine provider, or other qualified clinician.

How Is Patellar Tendonitis Treated?

Most cases of patellar tendinopathy are initially managed with conservative treatment.

The goal is to reduce aggravating loads, improve strength, and gradually restore the tendon’s ability to tolerate activity.

Activity Modification

Temporarily reducing activities that provoke significant pain may allow symptoms to settle.

This doesn’t always mean avoiding exercise entirely.

Lower-impact activities may help you remain active while reducing stress on the tendon.

Progressive Strengthening Exercises

A carefully planned exercise program is one of the main approaches used to manage patellar tendinopathy.

Depending on symptoms and recovery stage, exercises may include:

  • Isometric quadriceps exercises

  • Controlled squats

  • Leg presses

  • Gradual resistance training

  • Progressive tendon-loading exercises

Exercises should be introduced and progressed according to individual tolerance and professional guidance.

Cold Therapy

Applying a cold pack after activity may help temporarily reduce discomfort.

Use a cloth barrier between the cold pack and your skin and limit application to approximately 15 to 20 minutes at a time.

Supportive Bracing or Straps

Some people find that a patellar tendon strap provides temporary symptom relief during activity.

However, straps do not correct the underlying tendon-loading problem and should not replace rehabilitation.

Physical Therapy or Other Conservative Care

A rehabilitation program may address strength, flexibility, movement mechanics, and gradual return to activity.

Other conservative treatments may be considered based on the diagnosis and response to initial care.

Should You Exercise With Patellar Tendonitis?

Complete rest is not always the best long-term solution for patellar tendinopathy.

Tendons generally respond to appropriately managed loading, which helps them adapt and become more tolerant of physical demands.

However, continuing high-impact activities through significant pain may worsen symptoms.

A healthcare professional can help determine which exercises are appropriate and how to modify your activity.

In general, the goal is to find a level of movement that doesn’t cause substantial symptom worsening during exercise or the following day.

How Long Does Patellar Tendonitis Take to Heal?

Recovery depends on the severity of symptoms, how long the condition has been present, and how consistently the tendon is managed.

Mild symptoms may improve within several weeks when aggravating activities are adjusted.

More persistent patellar tendinopathy often requires several months of progressive rehabilitation.

Because tendon adaptation takes time, returning to high-impact activity too quickly can contribute to recurring symptoms.

A gradual return to normal activity is generally more effective than repeatedly resting until pain disappears and then immediately resuming full-intensity exercise.

When Should You Seek Care for Knee Pain?

Occasional soreness after physical activity is common, but persistent pain below the kneecap shouldn’t be ignored.

Consider scheduling an evaluation if:

  • Pain continues for more than a week or two

  • Symptoms repeatedly return during exercise

  • Knee discomfort interferes with walking or climbing stairs

  • You experience increasing tenderness below the kneecap

  • Your knee pain limits work, sports, or everyday activities

Seek urgent medical attention if you experience a sudden popping sensation followed by difficulty straightening your knee, inability to bear weight, significant swelling after an injury, or a hot, swollen knee accompanied by fever.

These symptoms may indicate a condition that requires more immediate treatment.

How Can You Help Prevent Patellar Tendonitis?

Although not every case can be prevented, several habits may help reduce the risk of developing patellar tendon pain.

Increase Exercise Intensity Gradually

Avoid sudden increases in running mileage, jumping volume, or resistance training intensity.

Gradually increasing physical demands gives your muscles and tendons time to adapt.

Strengthen Your Lower Body

Maintaining strength in your quadriceps, hamstrings, glutes, and calves can support healthy movement and improve tolerance for physical activity.

Allow Time for Recovery

Rest and recovery are important parts of any exercise program.

Alternating higher-intensity activities with lower-impact training may help reduce excessive tendon loading.

Pay Attention to Early Symptoms

Mild discomfort below the kneecap may be an early sign that your tendon is struggling with current activity demands.

Addressing symptoms early can help prevent persistent limitations.

Review Your Movement Mechanics

A qualified healthcare professional can assess strength, mobility, and movement patterns that may be contributing to knee discomfort.

Take the Next Step Toward Relief at Spine Correction Center

Pain below your kneecap can make even simple activities feel challenging. Whether you’re an athlete dealing with discomfort during training or someone experiencing knee pain while climbing stairs, understanding the underlying cause is an important first step.

Patellar tendonitis is often associated with repetitive loading, but other knee conditions can cause similar symptoms.

At Spine Correction Center, we believe addressing musculoskeletal discomfort begins with understanding how your body moves and identifying factors that may contribute to pain.

If persistent knee discomfort is interfering with your routine, a professional evaluation can help you explore appropriate conservative care options and determine whether additional treatment or referral is needed.

Contact Spine Correction Center today to learn more about evaluating knee pain and supporting comfortable, healthy movement.