What does physio do after a knee replacement?

What recovery aims for

A knee replacement gives you a new joint, but the muscles around it are weak and the knee is stiff at first. The work after surgery is teaching that knee to bend, straighten fully and carry your weight again.

A physiotherapist assesses how far the knee moves, how the leg takes weight, and how you walk. From there the plan sets a few clear goals, such as getting the knee straight and standing without holding on.

Everything follows the surgeon’s advice on how much to do and when. We never push past the limits your surgeon has set.

What the physiotherapist works on

Early on, gentle movement matters more than strength. We guide safe ways to bend and straighten the knee, and help you stand and take steps with a frame or sticks.

As the wound settles and pain eases, the focus moves to muscle strength, balance and walking further. We watch how you move so the new knee is not strained.

We also show the family how to help safely at home, and how to set up the room so getting up from a chair or bed is easier.

Protecting the new knee

Swelling is common in the first weeks, and some is normal. Rest, gentle movement and keeping the leg raised often help it settle.

We teach you how to move without twisting the knee awkwardly, and how to manage stairs one step at a time. Doing a little often is safer than doing a lot in one go.

Progress is reviewed openly. If the knee is not moving as expected, we adjust the plan and suggest a doctor’s review when needed.

Warning signs that need a doctor

Some signs need urgent medical attention, not physiotherapy. Call your doctor or go to hospital if the calf becomes hot, swollen and painful, or if you feel short of breath or chest pain.

Also seek review if the wound looks red and hot, leaks fluid, or you have a fever. These can be signs of a clot or infection.

We would rather you check early. Recovery is safest when surgery, medicine and physiotherapy each play their part.

Everyday tasks we practise

Recovery is measured in the tasks you can do again, not just the exercises. So we practise the real ones with you.

We work on getting up from a chair, managing the step at the door, and reaching the bathroom safely. Getting in and out of bed is often on the list too.

Each task is broken into steps you can manage, then built up as the knee grows stronger.