Knee Pain After a Fall — Should You See a Physio, GP, or Go to ED?

A sudden knee injury is alarming. One moment you are walking, running, or playing sport — the next, your knee is swollen, painful, or refusing to take your weight. The hardest part is often deciding where to go: emergency department, GP, or straight to a physiotherapist?

The right choice depends on how the injury happened, what your knee is doing now, and a few specific warning signs. Here is how to think it through.

When to go to ED immediately

Some knee injuries need emergency assessment today. Go to your nearest emergency department if: you cannot put any weight through the leg at all, your knee looks obviously deformed or out of place, the kneecap has shifted and not relocated, or there is an open wound over the joint.

Also go to ED if your knee swelled up rapidly within the first hour after the injury — this can sometimes indicate bleeding inside the joint that benefits from early assessment. Severe pain that is not settling with rest and simple pain relief is another reason to be seen the same day.

If you are over 65 and have fallen onto your knee, an ED review is the safer first step regardless of how the knee looks.

When to see your GP first

See your GP within a few days — rather than going straight to a physio — if you have a history of inflammatory arthritis or gout and your knee has flared, if your knee is hot, red, and you are feeling generally unwell or feverish, or if you have an underlying condition that affects how injuries should be investigated.

Unexplained knee swelling without any injury, especially alongside weight loss or feeling unwell, is also worth a GP review before hands-on treatment begins.

When to book a physio directly

Most knee injuries — even painful ones — can go straight to a physiotherapist without a GP referral. Book a physio if: you can put some weight through the leg even though it is sore, your knee is swollen but not deformed, your knee feels unstable or "gives way" when you walk, you heard a pop at the time of injury but can still bear weight, or your pain came on gradually without a clear injury.

Physiotherapists are trained to assess knees, decide whether imaging or a specialist opinion is needed, and start rehab early. In Australia, you do not need a GP referral to see a physio.

When to manage at home

If you had a minor knock, your knee is mildly sore, you can walk on it, and there is no significant swelling — short-term self-management is reasonable. Rest from aggravating activities for a day or two, ice for short periods, elevate when you can, and keep gently moving the joint. If things have not improved in a week or two, book a physio.

Not sure which applies to you?

Knee injuries vary enormously, and the right next step depends on your specific symptoms. If you are not sure whether your knee needs ED, a GP, or a physio — Triagr can help. Answer a few plain-language questions and get a clear recommendation in under 2 minutes.

This article provides general health information only — not clinical advice. Always consult a qualified health professional for personal medical advice.