Patellar Tendonitis
Patellar tendonitis refers to irritation of the tendon that connects the kneecap to the shin bone. This tendon plays an important role in straightening the knee and absorbing load during physical activity.
Many people search for this condition as knee pain below the kneecap, front of knee pain, or jumper’s knee before receiving a diagnosis. Some people assume their pain is general knee soreness or a joint problem — in many cases, the tendon is the actual source.
Prompt assessment can help identify the cause of symptoms and guide appropriate management.
What Is the Patellar Tendon?
The patellar tendon runs from the bottom of the kneecap (patella) to the top of the shin bone (tibia). It works together with the quadriceps muscles to straighten the knee during activities like walking, running, jumping and squatting.
Because it absorbs significant force during many everyday and sporting movements, it is prone to overload — particularly when activity increases quickly or recovery is insufficient.
Types of Patellar Tendon Problems
Symptoms may relate to different types of tendon involvement.
Patellar Tendonitis Irritation and inflammation of the tendon, often in the earlier stages of the problem. Sometimes referred to as jumper’s knee, particularly in athletes.
Patellar Tendinopathy Longer-term structural changes within the tendon that develop over time with repeated overload. Pain may be persistent and can occur with everyday activities, not just sport.
Partial Tendon Tear A partial tear may develop from ongoing tendon degeneration or acute overload. Symptoms may not always reflect the extent of the injury.
Patellar Tendon Rupture A complete rupture is a more significant injury that typically causes immediate inability to straighten the knee. This usually requires urgent medical assessment.
Patellofemoral Pain Syndrome (Runner’s Knee)Â A related but distinct condition involving the joint surface between the kneecap and thigh bone rather than the tendon itself. The two conditions are commonly confused as they can feel similar.
Common Causes of Patellar Tendon Pain
Possible causes include:
- Jumping sports such as basketball, volleyball, netball or AFL
- Running, particularly with a sudden increase in distance or intensity
- Weightlifting or squatting movements
- Repeated kneeling or stair climbing in occupational settings
- Rapid increase in training load without adequate recovery
- Tight quadriceps or hamstring muscles
- Poor lower limb biomechanics or foot mechanics
- Previous knee injury
Symptoms of Patellar Tendonitis
Symptoms may include:
- Pain directly below the kneecap
- Tenderness when pressing on the tendon
- Pain that worsens with jumping, running, squatting or going up and down stairs
- Stiffness at the front of the knee after rest, particularly in the morning
- Pain that eases with warm-up but returns after activity or the following day
- Swelling or thickening around the tendon in some cases
- Weakness or reduced confidence when loading the knee
Symptoms can range from mild discomfort during sport to persistent pain that affects daily activities. If left unaddressed, tendon changes can progress and become more difficult to manage, which is why early assessment is worthwhile.
Book an appointment
Call us
1300 525 666
A Note on Misdiagnosis
Front-of-knee pain is one of the most common musculoskeletal complaints, and patellar tendon problems are frequently confused with other conditions — particularly patellofemoral pain syndrome (runner’s knee), Osgood-Schlatter disease in younger individuals, fat pad irritation, and early knee arthritis.
Each of these conditions has different management implications. If you have been managing knee pain without improvement, or if a previous diagnosis does not seem to fit your symptoms, a specific assessment for tendon involvement is worthwhile.
How Is It Diagnosed?
Assessment usually includes:
- Review of symptoms, activity history and how the pain behaves
- Physical examination of the knee and surrounding structures
- Assessment of knee movement, strength and loading capacity
- Ultrasound or MRI where clinically indicated to assess tendon structure
- X-ray if a bony injury or calcification is also suspected
Accurate diagnosis guides the right management approach and helps avoid treating the wrong structure.
Which Clinician Should I See?
Patellar tendon injuries can be assessed and managed by several types of clinicians depending on the nature and severity of symptoms.
- Sports medicine doctor — well suited to activity-related and overuse presentations, particularly in athletes or active individuals. A common and appropriate first point of specialist contact for patellar tendon pain.
- Orthopaedic surgeon or knee specialist — appropriate for suspected tendon tears, ruptures, or where surgical review may be needed. Also relevant if conservative management has not produced improvement.
- Physiotherapist — plays a central role in assessment, load management and structured rehabilitation. Often the primary treating clinician for tendinopathy presentations.
- Podiatrist — useful where foot mechanics or lower limb biomechanics are identified as contributing factors.
- GP — a good starting point if you are unsure where to go. Can assess, arrange imaging and refer to the appropriate specialist.
Unlike peroneal tendon injuries, a fracture clinic is generally not the primary entry point for patellar tendon pain unless there has been significant acute trauma or a patellar fracture needs to be excluded.
Treatment Options
Treatment depends on the type of tendon problem, severity and how long symptoms have been present. A clinician will discuss the most appropriate options based on individual assessment findings.
Non-Surgical Management
The majority of patellar tendon presentations are managed without surgery. Options may include:
- Load management — reducing or modifying aggravating activities
- Structured rehabilitation and progressive tendon loading
- Quadriceps and lower limb strengthening
- Patellar tendon strapping or bracing where appropriate
- Footwear and biomechanics assessment
- Pain management as directed by a clinician
- Gradual, supervised return to sport or activity
Surgical Management
Surgery is generally considered when symptoms have not responded to a thorough and well-managed conservative program, or in cases of significant tendon tearing or rupture. A specialist can advise on whether surgical review is appropriate and what it may involve.
Recovery and Rehabilitation
Recovery varies between individuals and depends on factors including the type and extent of tendon involvement, how long symptoms have been present, training load management, and consistency with rehabilitation. Timeframes cannot be guaranteed, and a treating clinician is best placed to provide guidance based on your specific situation.
General considerations include:
- Tendinopathy responds well to progressive loading when managed appropriately — complete rest is generally not recommended as the sole approach
- Returning to full sport or heavy loading too quickly is one of the most common reasons symptoms recur
- Longer-standing tendon changes or significant tears typically require more time and a carefully structured rehabilitation program
- Post-surgical recovery varies depending on the procedure performed and the individual’s response to rehabilitation
Physiotherapy and Rehabilitation
Rehabilitation is central to recovery for most patellar tendon presentations. A structured program may include:
- Progressive tendon loading exercises tailored to symptoms and stage
- Quadriceps, hamstring and hip strengthening
- Balance and neuromuscular control work
- Sport-specific movement and landing mechanics
- Graduated return to jumping, running and sport
- Education on load management and training modifications
- Return-to-work planning where physical demands are relevant
Exercises should be guided and progressed based on symptoms and clinical assessment rather than a fixed schedule.
Return to Work, Sport and Daily Activities
Return to activity is based on pain response, strength, functional capacity and clinical progress — not a fixed timeline. Office-based or sedentary roles are generally less affected than physically demanding work involving kneeling, lifting or stair climbing. Return to jumping or high-load sport is typically the final stage and is guided by clinical assessment and individual goals.
When to Seek Assessment
Arrange an assessment if you have:
- Pain below the kneecap that is not settling
- Front of knee pain during or after running, jumping or squatting
- Morning stiffness at the knee that eases through the day
- Knee pain that keeps returning with sport or activity
- Swelling or thickening around the tendon below the kneecap
- A sudden onset of significant knee pain with inability to straighten the leg — seek urgent assessment
- Symptoms that have been present for several weeks without improvement
FAQ
What is jumper's knee?
Jumper’s knee is a common lay term for patellar tendonitis or patellar tendinopathy. It refers to irritation of the tendon below the kneecap and is particularly associated with sports involving repeated jumping such as basketball, volleyball and netball. The clinical term and the lay term refer to the same structure.
Can I still exercise with patellar tendonitis?
 In many cases, some activity can continue, though it may need to be modified. Complete rest is not always the recommended approach for tendon problems. A clinician can advise on what level of activity is appropriate and how to structure loading during recovery.
My knee pain is worse in the morning — is that a tendon problem?
Morning stiffness that eases once you get moving is a common feature of tendinopathy. It can also occur with other knee conditions. If this pattern is familiar, it is worth having it assessed to identify the source.
Is patellar tendonitis serious?
For most people, it is a manageable condition that responds well to appropriate rehabilitation. However, if left unaddressed it can progress to more significant tendon changes that are harder to treat. A complete tendon rupture, while less common, is a more serious injury requiring urgent attention.
I've had knee pain for months — is it too late to do something about it?
No. Longer-standing tendon problems can still respond to appropriate rehabilitation, though they may require a more structured and gradual approach. Assessment is worthwhile regardless of how long symptoms have been present.
Is surgery always needed for a patellar tendon problem?
No. The majority of patellar tendon presentations are managed without surgery. Surgical review is typically considered only when conservative management has been thorough and unsuccessful, or in cases of significant tendon rupture.
Is patellar tendonitis the same as runner's knee?
No. These are two different conditions that are commonly confused. Patellar tendonitis involves the tendon below the kneecap. Runner’s knee (patellofemoral pain syndrome) involves the joint surface between the kneecap and the thigh bone. Both cause front-of-knee pain, but they have different causes and management approaches. Accurate diagnosis matters.
Do I need a scan?
Not always. A clinician will advise whether ultrasound or MRI is appropriate based on your symptoms and examination. Imaging can help assess the extent of tendon involvement but is not always required to begin management.
Why does my knee feel fine during warm-up but hurt afterwards?
This pattern — pain that eases with warm-up but returns after activity or the next day — is characteristic of patellar tendinopathy. It reflects the tendon’s response to load and is a useful symptom to describe to your clinician.
What happens if I ignore patellar tendon pain?
Continuing to load an irritated tendon without management can lead to progressive tendon degeneration and, in some cases, a partial or complete tear. Early assessment and appropriate load management can help prevent this progression.
Should I use ice or heat on my knee?
This depends on the stage of the injury and individual response. A clinician can advise on what is appropriate for your situation. General self-management should not replace a clinical assessment if symptoms are persistent.
Can patellar tendonitis come back after it has healed?
Yes, recurrence is possible — particularly if training load is increased too quickly, contributing factors are not addressed, or rehabilitation is not completed. A structured return to activity and ongoing load management help reduce this risk.
I play sport several times a week — do I have to stop completely?
Not necessarily. Activity modification rather than complete rest is often recommended. The goal is to reduce load on the tendon to a manageable level while rehabilitation progresses. A clinician can help work out what is appropriate for your sport and training schedule.