Long-term after-effects of a knee injury: understanding where your pain really comes from and getting back to activity

What are long-term after-effects on the knee?

Understanding where your pain really comes from

Pain that shows up in the knee doesn’t always start in the knee. An old hip injury, even one that seems to have healed well, can leave residual weakness in the gluteus medius or a loss of pelvic control that quietly changes how the knee absorbs load with every step. We talk about “long-term after-effects” when the consequence of an old injury shows up, months or years later, in a different area from the one originally affected.

Why does the pain appear in the knee rather than the hip?

After an old hip injury, even one well treated at the time, weakness in the gluteus medius can persist without ever causing pain in the hip itself. Without this pelvic control, the knee tends to cave inward with every step: it’s this repeated overload, transmitted from one joint to another, that eventually becomes painful at the knee, long after the hip was declared healed.

Which sports most often reveal this pain?

Any sport that places intense demand on the knee can reveal this old deficit carried over from the hip to the knee:

• Football and rugby
• Skiing
• Basketball and handball
• Running
• Combat sports
• Hiking on rough terrain

Treating this referred pain in rehab with a sports physio

The goal of treatment isn’t to focus solely on the painful knee, but to identify and treat the underlying residual hip deficit, removing the cause of the overload rather than just relieving the symptom.

1. 1Assessing current function
2. 2Recovering full mobility
3. 3Isometric strengthening
4. 4Progressive concentric strengthening
5. 5Proprioceptive work
6. 6Eccentric strengthening
7. 7Correcting established compensations
8. 8Strengthening under sport-specific load
9. 9Progressive return to your sport
10. 10Return to competition

Why the physio’s initial assessment matters

During the initial assessment, the physiotherapist doesn’t limit themselves to the painful knee: they systematically look for a history of trauma in neighbouring joints, particularly the hip, even old and forgotten injuries, because that’s often where the real root of the problem is hiding.

“Pain sometimes shows up far from where the problem actually began.”

Strengthening the hip, the cornerstone of treatment

Strengthening the gluteus medius and hip rotators restores the pelvic control that’s been missing since the old injury, which directly reduces the overload transmitted to the knee with every step.

In brief

• Full assessment of the hip, the real root of the problem
• Gluteus medius strengthening
• Correcting the established compensation at the knee
• Gradual return: mobility, then load, then sport

Should you rest or keep playing sport?

Resting the knee alone generally isn’t enough if the underlying hip deficit isn’t treated: it’s targeted work on the hip, combined with suitably managed load, that resolves the pain for good.

When should you see a specialist for this pain?

If the knee pain persists despite work on the hip, or is accompanied by swelling, mechanical locking or clear instability, a medical opinion is recommended to rule out another local cause.

The HOPP care programmes to treat the root of your pain and get back to sport

This pain requires treating the hip, the real root of the problem, not just the knee. HOPP offers you a precise exercise programme, allowing you to get back to your activities as quickly as possible.

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.

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 knee is complaining. This daily personalisation is what makes the difference compared to a fixed, paper-based programme.

Ready to start your programme?

Join the HOPP support programme designed by sports physios.

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