Goosefoot tendinitis or tendinopathy

Pain on the inside of the knee may occur when climbing stairs, while running, or after an increase in activity. This location may suggest the goose-foot region, but it does not, on its own, confirm which structure is involved.^{1, 2}

This article explains the possible causes, symptoms, evaluation, and treatments for goose-foot tendinopathy. It also provides guidelines for adjusting activities and knowing when to seek medical attention.

What is pes anserine tendinopathy?

Goose-foot tendinopathy refers to pain associated with one or more tendons located on the inner side of the knee. This region also includes a bursa, and a physical examination does not always allow for determining which structure is causing the symptoms.^{1, 2}

What is the pes anserine?

The goose foot is where the tendons of the sartorius, gracilis, and semitendinosus muscles converge. These three tendons attach to the tibia, on the inner side and slightly below the knee.¹

The term “crow’s foot” describes the shape of this common attachment site. A bursa—a small sac filled with fluid—facilitates smooth gliding between the tendons and surrounding tissues. Pain in this area may originate from the tendons, the bursa, or another structure in the knee.¹

What is the difference between tendinitis and tendinopathy?

The term "tendinopathy" describes pain and impaired function associated with a tendon. This clinical term alone does not provide a complete picture of all the changes occurring in the tissue.

The term “tendinitis” implies inflammation, but the presence and role of inflammation vary depending on the tendon, the individual, and the stage of the condition. A review of 53 human studies found the results to be too varied to conclude that there is a common inflammatory mechanism.³

What causes pes anserine tendinopathy?

A recent increase in activity, the knee's current condition, and other health issues can contribute to the symptoms of "crow's feet." There is no single cause that explains all cases.

The Mechanism of Overuse

Tendons are subjected to stress every time the muscles contract. They can adapt to this stress, but a rapid or unusual increase in stress can worsen symptoms in some people.

Pain is not a direct indicator of the tendon's condition. It also depends on the sensitivity of the area, sleep, stress, other knee problems, and changes in activity levels.

The area may become painful after a change in load, but a physical examination does not always make it possible to distinguish whether the pain originates from the tendon, the bursa, or another nearby structure.

Main Risk Factors

Common Scenarios

Certain situations may precede the onset or worsening of symptoms:

• Getting back into running after a break with a rapid increase in mileage
• Add multiple descents, inclines, or staircases in a short amount of time
• Quickly Increase Distance or Resistance When Cycling
• Changing Multiple Training Elements at the Same Time

Pain in the "crow's foot" area is often reported by people who also have knee osteoarthritis. This association does not prove that osteoarthritis causes the pain. A small case-control study did not confirm osteoarthritis, diabetes, or weight as independent risk factors.⁴

What are the symptoms of pes anserine tendinopathy?

Goosefoot tendinopathy can cause pain on the inside of the knee, just below the joint. The area may also be tender to the touch, especially during or after certain activities.¹

Key Signs

• Pain on the inside of the knee, below the joint line
• Local sensitivity to touch
• Pain when climbing stairs or getting up from a chair
• Pain during or after an activity that puts stress on the knee
• Stiffness or discomfort after a period of rest

• Going up or down a flight of stairs
• Getting up from a low chair
• Running, walking for a long time, or cycling
• Bend your knee deeply if this movement triggers symptoms

Typical Presentation

Symptoms may first appear after physical activity, but may later occur sooner as the area becomes less able to tolerate the strain.

Increasing pain does not automatically mean that the tendon is sustaining further damage. However, it does indicate that the activity or treatment plan needs to be adjusted.

The combination of pain on the inner side of the knee and local tenderness can guide the evaluation. It is not sufficient on its own to confirm tendinopathy or bursitis.²

This suggests something else

Seek medical evaluation promptly if you notice any of the following signs:

• Significant swelling that develops rapidly
• Redness, warmth, or fever
• Sudden inability to put weight on the leg
• Persistent locking or new instability of the knee
• Intense, unexplained pain that does not change with movement

How is pes anserine tendinopathy diagnosed?

The diagnosis of goosefoot tendinopathy is based on the patient’s history of symptoms and a physical examination. The location of the pain, the activities that affect it, and the response to tests guide the evaluation, although they do not always identify the exact structure involved.^{1, 2}

Pain on the inside of the knee can also originate from the meniscus, a ligament, the joint itself, a nerve, or another area. The evaluation compares these possibilities rather than drawing conclusions based solely on the location. Our articles on knee osteoarthritis and patellofemoral syndrome discuss other knee conditions.

Clinical evaluation

The clinical evaluation verifies the following:

• The onset and progression of symptoms
• Recent Changes in Business Activities
• Movements that increase or decrease pain
• Other Health Problems or Knee Injuries

• The location and sensitivity of the region
• Knee and Hip Mobility
• Strength and exercise tolerance
• Walking, climbing stairs, or other activities that trigger symptoms

The role of imaging

Imaging is not routine. It becomes necessary when a physical examination is insufficient, when symptoms do not follow the expected course, or when another condition is suspected.

An ultrasound may show the bursa or the tendons, but a normal ultrasound image does not rule out pain in this area. In a small study, the majority of people with a clinical diagnosis showed no evidence of tendinitis or bursitis on ultrasound.²

An X-ray can assess the joint, and an MRI can examine other structures. The choice depends on the clinical issue, not on a one-size-fits-all routine.

How does physiotherapy treat pes anserine tendinopathy?

Physical therapy treats goose-foot tendinopathy through education, activity modifications, and progressive exercises. Data specific to this region remain limited. The cited study compared an injection with two weeks of passive treatments in individuals who also had knee osteoarthritis. Follow-up occurred at eight weeks; this study did not test the exercise program described here.⁵

The initial assessment

The initial assessment guides the selection of interventions:

• Knee and Hip Mobility
• Strength of the muscles that control the hip and knee
• Ability to walk, climb stairs, and perform the specified activities
• Current Business Volume and Recent Changes

The fundamental principle: load management

Load management involves finding a level of activity that the knee can tolerate, then gradually increasing the demands. The right balance depends on how the knee responds during the activity, after the activity, and the next day.

The exercises do not follow a single model. The physical therapist selects the movements, resistance, and number of repetitions based on the patient’s observed abilities and the activity the patient wishes to resume.

The plan may include the following steps:

• Temporarily adjust an activity that causes a marked or persistent increase in symptoms
• Continue with activities that your knee can handle
• Gradually strengthen the hip and knee

Types of Therapeutic Exercises

Other interventions

Other interventions can support the active program:

• Manual therapy or other manual techniques to temporarily relieve symptoms
• Tips for Organizing Daily Activities and Sports
• Progress in walking, climbing stairs, running, or another specified activity
• Communication with a physician when warranted by the patient's condition or diagnosis

How long does it take to recover?

There is no set recovery time for goose-foot tendinopathy. The available studies do not provide a reliable timeframe that applies to everyone.

Phases of healing

Progression is based on pain response and functional status. The plan first reduces activities that are less well tolerated, then builds the necessary capabilities, and finally gradually reintroduces the targeted activities.

What Drives Progress

No single set of factors can reliably predict recovery from goose-foot pain. Instead, monitoring is based on observable changes:

• The pain subsides or returns to its usual level more quickly after the activity
• Strength and task tolerance increase
• The program fits realistically into everyday life

What Can Slow Progress

• A repeated increase in activity beyond the current tolerance level
• Another knee problem that has not yet been identified
• A program that does not match the person's abilities or goals

When to consult a physiotherapist?

See a physical therapist if the pain persists, limits your activities, or returns whenever you increase your activity level.

You can see a physical therapist directly. The evaluation is designed to identify possible causes and determine whether a medical consultation or imaging is warranted.

See a doctor right away if your knee becomes very swollen, red, or warm; if you have a fever; if you can no longer put weight on it; or if the pain follows a significant injury.

What to do at home to relieve pain?

At home, you can temporarily limit movements that significantly increase pain and stick to activities that your knee can handle. You can then gradually resume activities, depending on how your knee responds during the activity and the next day.

Tips that can help

• Cold therapy: Use it briefly if it relieves pain; it is not necessary, and its effect on healing has not been established.
• Activity: Choose walking, biking, or another activity that does not cause a significant or prolonged increase in symptoms.
• Exercises: Practice the prescribed movements at an intensity that your knee can tolerate. See also our article on the quadriceps and knee pain.
• Progression: Increase only one factor at a time—for example, duration, distance, or resistance.

What to Avoid

• Pushing through despite severe pain or pain that is steadily getting worse
• Increase multiple business metrics at the same time
• Stopping all activities for an extended period without a medical reason
• Doing a stretch that clearly worsens the symptoms

Frequently Asked Questions

Frequently asked questions cover recovery, running, bursitis, medications, and prevention.

Can pes anserine tendinopathy heal completely?

A full recovery is possible, but there is no reliable recovery rate that applies to everyone. If the condition stops progressing, an evaluation is conducted to confirm the diagnosis, assess the level of activity, and examine other factors affecting the knee.

Can I continue running with this condition?

Sometimes you can continue running by temporarily reducing the distance, speed, or number of downhill sections. Running is still acceptable if the symptoms remain tolerable, return to their usual level, and do not impair your performance the next day.

What is the difference between pes anserine tendinopathy and bursitis?

Bursitis affects the bursa, while tendinopathy affects a tendon. Since these structures are located in the same area, the symptoms are similar, and a physical examination does not always allow for a definitive distinction between them.²

Are anti-inflammatories helpful?

Anti-inflammatory medications may provide short-term relief for some people, but they are not suitable for everyone. A pharmacist or doctor can check for contraindications and determine the appropriate duration of use. Research also shows that the degree of inflammation varies greatly from one tendinopathy to another.³

How to Prevent a Recurrence?

No strategy can prevent all relapses. A gradual progression, maintaining functional abilities, and early adjustment when symptoms worsen can reduce sudden changes in disease burden.

References

This article is based on the following five scientific sources. Each number listed in the text corresponds to the relevant reference.

Links open in a new tab.

1. Mohseni M, Mabrouk A, Li D. Pes Anserine Bursitis. StatPearls. 2024. (Back to sections: 1, 2, 3, 4, 5, 6)
2. Uson J, Aguado P, Bernad M, Mayordomo L, Naredo E, Balsa A, et al. Pes anserinus tendinobursitis: what are we talking about? Scand J Rheumatol. 2000;29(3):184-6. (Back to sections: 1, 2, 3, 4, 5, 6)
3. Jomaa G, Kwan CK, Fu SC, Ling SK, Chan KM, Yung PS, et al. A systematic review of inflammatory cells and markers in human tendinopathy. BMC Musculoskeletal Disorders. 2020;21(1):78. (Back to sections: 1, 2)
4. Alvarez-Nemegyei, J. Risk factors for pes anserinus tendinitis/bursitis syndrome: a case-control study. J Clin Rheumatol. 2007;13(2):63-5. (Back to section: 1)
5. Sarifakioglu B, Afsar SI, Yalbuzdag SA, Ustaömer K, Bayramoğlu M. Comparison of the efficacy of physical therapy and corticosteroid injection in the treatment of pes anserine tendinobursitis. J Phys Ther Sci. 2016;28(7):1993-7. (Back to section: 1)