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Pes anserine tendinopathy: understanding your inner knee pain and getting back to activity

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What is pes anserine tendinopathy?

Pes anserine anatomy

The pes anserine is the area where three tendons (gracilis, semitendinosus and sartorius) attach together on the inner side of the shin, just below the knee. This shared, fan-shaped attachment resembles the shape of a goose’s foot, hence its name (“pes anserinus” in Latin). It plays a role in the knee’s inner stability and in knee flexion.

Why does this area become painful?

Tendinopathy appears when this attachment area is subjected to repeated friction or strain, particularly during running with the knee slightly rotated inward (valgus), or during repeated knee flexion movements against resistance. A lack of flexibility in the muscles involved increases tension on this shared attachment.

Inner area, below the knee, in the HOPP app
Physio insight: pes anserine tendinopathy is sometimes confused with an issue with the medial collateral ligament, as both cause pain on the inner side of the knee. The difference is found through precise palpation: the pes anserine is lower down and more toward the front of the shin.

Which sports contribute to pes anserine tendinopathy?

Sports involving repeated running or rotational knee flexion movements carry a particular risk:

  • Running, particularly with a valgus knee
  • Swimming, especially breaststroke (the whip-kick motion)
  • Cycling with an unsuitable saddle position
  • Football (striking, changes of direction)
  • Sports with a lot of knee flexion against resistance
Physio tip: if you swim breaststroke, temporarily reduce the amplitude of the whip-kick leg movement until the pain settles: it’s one of the most demanding movements for this tendon attachment.

Treating pes anserine tendinopathy in rehab with a sports physio

The goal of treatment is twofold: quickly ease the local pain, then restore this attachment area’s capacity to withstand the demands of your sport, without lasting effects.

  1. 1Reducing local irritation
  2. 2Hip and knee mobility
  3. 3Targeted stretching of the muscles involved
  4. 4Pain-relieving isometric strengthening
  5. 5Progressive eccentric strengthening
  6. 6Correcting knee alignment under load
  7. 7Progressive reintroduction of running
  8. 8Working on swimming technique if relevant
  9. 9Progressive return to your sport
  10. 10Return to competition

Why the physio’s initial assessment matters

During the initial assessment, the physiotherapist aims to understand the context in which the pain appeared: type of sport, any recent change in training volume, swimming technique if relevant, and knee alignment under load.

“It’s not that the tendon is fragile, it’s that the load exceeded its capacity to adapt at a given moment.”

Strengthening, the cornerstone of treatment

Isometric then eccentric strengthening of the pes anserine muscles progressively restores this tendon attachment’s capacity to withstand load. Working on knee alignment under load (often linked to the hip) helps reduce the repeated strain behind the irritation.

In brief

  • Isometric work first to calm the pain
  • Progressive eccentric work to strengthen the tendon
  • Correcting knee alignment under load
  • Gradual return: mobility, then load, then sport
Guided mobility exercise in the HOPP app

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Should you rest or keep playing sport?

Total rest isn’t the solution. It’s better to adapt your activity during the acute phase: limit the movements that clearly reproduce the pain (running, breaststroke kick), while staying physically active and starting strengthening as soon as possible.

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When should you see a specialist for pes anserine tendinopathy?

If the pain persists for more than two to three weeks despite adapting your activities, or if you’re unsure about the exact cause of the inner knee pain, a medical opinion is recommended to rule out another cause, such as an issue with the medial collateral ligament or meniscus.

The HOPP care programmes to treat your pes anserine tendinopathy and get back to sport

Pes anserine tendinopathy requires a complete, progressive programme of care to heal durably. HOPP offers you a precise exercise programme, allowing you to get back to your activities as quickly as possible. By combining stretching, mobility, isometric and eccentric strengthening, and training management, HOPP supports you all the way back to the field.

Targeted stretches for the three pes anserine muscles to release tension on their shared attachment.
Hip and knee mobility work to improve overall lower-limb alignment.
Progressive strengthening: isometric, then eccentric work for the pes anserine muscles.
A progressive, guided return to running or swimming depending on your sport.

The programme runs from 3 to 9 weeks depending on the injury and ends with a reconditioning phase allowing a return to competition in the best possible conditions. Each programme is designed by the HOPP team, made up of two sports physiotherapists who are experts in assessing and treating athletes. You’ll also find theoretical content throughout your progression, so you master every aspect of your recovery and can adjust your treatment independently. If needed, our team of physiotherapists is on hand to support you.

Essential

FROM INJURY TO
BACK TO YOUR ACTIVITIES

59€

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“AT YOUR OWN PACE WITH
DAILY ADAPTATION”

  • 100% of the treatment programme
  • Daily personalisation
  • Flexibility / Mobility
  • Strengthening
  • Proprioception
  • Progress tracking
  • Return-to-running programme
  • Theoretical content included
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PERSONALISED VIDEO-CALL
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149€

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“A PHYSIO
WHENEVER YOU NEED”

  • 100% of the treatment programme
  • Daily personalisation
  • Flexibility / Mobility, Strengthening, Proprioception
  • Progress tracking
  • Return-to-running programme
  • Theoretical content included
  • + 4-week return-to-play plan with 6 difficulty levels
  • + 2 video calls with an expert sports physio / return check-up
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A programme that adapts to you every day

Every day, how you feel (RPE) is factored in to automatically adjust the rest of your programme: more load if all is well, a bit less if your tendon is complaining. This daily personalisation is what makes the difference compared to a fixed, paper-based programme.

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Post-effort RPE questionnaire in the HOPP app

F.A.Q

Pes anserine tendinopathy or an MCL sprain, how can you tell the difference?

Both cause pain on the inner side of the knee, but pes anserine tendinopathy is lower down on the shin and linked to overuse, whereas an MCL sprain follows a specific trauma. A sports physio can tell the difference through palpation and examination.

Can I keep playing sport with pes anserine tendinopathy?

Yes, in most cases, by temporarily adapting the movements that reproduce the pain and starting strengthening as soon as possible rather than stopping completely.

How long does it take to recover from pes anserine tendinopathy?

It depends on how long you’ve had the pain. A structured programme generally brings clear improvement within a few weeks, followed by a full, progressive return to sport.

Does the HOPP programme replace a medical consultation?

No. HOPP is a support and rehab tool designed by sports physiotherapists, but it doesn’t replace a doctor’s opinion. If in doubt, or if the pain persists, see a health professional.

Is the programme suited to all sporting levels?

Yes. Every programme is personalised to your sport, your level and how you feel each day, whether you’re a recreational athlete or preparing for competition.

Thibault Vignais, sports physio

Written by Thibault Vignais

Sports physio and osteopath, HOPP co-founder

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