Knee pain: common causes, myths, and what actually helps

Knee pain is one of the most common reasons people walk into a physiotherapy clinic — runners, footballers, people who sit at a desk all day, and people who simply noticed that the stairs started to hurt. The good news: most knee pain improves with the right plan, and very little of it needs surgery.

Why does my knee hurt?

The knee is a hinge that sits between two long levers, the thigh and the shin. Whatever happens at the hip and the ankle ends up being felt at the knee. The most common causes we see are:

• Pain around or behind the kneecap (patellofemoral pain) — often worse on stairs, squatting, or after sitting for a long time with the knees bent.
• Tendon pain just below the kneecap (patellar tendinopathy) — common in people who jump, sprint or suddenly increase their training.
• Ligament injuries, such as an ACL or MCL sprain — usually after a twist, a pivot or a direct hit, often with swelling.
• Meniscus irritation or tears — catching, clicking or pain along the joint line, sometimes after a deep squat or a twist.
• Knee osteoarthritis — stiffness in the morning or after rest, and an ache that builds with activity. Common, and very treatable with exercise.

Common myths

“Rest it until it stops hurting.” A few days of calming things down can help, but complete rest weakens the muscles that protect the knee. Most knees recover better with the right amount of movement.

“Running ruins your knees.” Research consistently shows that recreational runners don’t have worse knees than non-runners. Problems usually come from doing too much, too soon — not from running itself.

“A scan will tell me what’s wrong.” Scans often show changes that cause no pain at all, especially after age 30. A good physical assessment of how you move tells us far more about what to treat.

“Clicking means damage.” Painless clicking and cracking is normal. It matters only when it comes with pain, swelling or the knee locking.

What actually helps

1. Load it, don’t avoid it. Strengthening the thigh (quadriceps) and hip muscles is the single most effective treatment for most knee pain.
2. Adjust, don’t stop. Reduce the activity that flares it — fewer kilometres, shallower squats, fewer stairs for a while — but keep moving.
3. Use pain as a guide. Mild discomfort during exercise (around 3 out of 10) that settles by the next morning is generally fine.
4. Look above and below the knee. Hip strength, ankle mobility and how you land from a step or jump all change the load on the knee.
5. Build back gradually. When pain settles, return to sport step by step instead of picking up where you left off.

When to see a physiotherapist

Book an assessment if your knee pain has lasted more than two weeks, keeps coming back, or stops you from training, working or sleeping well.

See a doctor or go to the emergency department straight away if:

• you heard a pop and the knee swelled quickly,
• you can’t put weight on the leg,
• the knee locks and you can’t straighten it,
• the knee is hot, red and swollen, or you have a fever.

How we treat knee pain at Recover

Every first session starts with a full assessment: your history, how you walk, squat, step and land, and what you want to get back to. From there we build a plan that usually combines hands-on treatment to ease pain with a progressive strength programme you can follow — in the clinic and at home. The goal isn’t only to stop the pain, but to make the knee stronger than it was before.

If your knee has been bothering you, book a session and we’ll work out what’s going on together.

This article is general information, not a diagnosis. Everyone’s knee is different — get assessed before starting a new treatment.