Home from hospital, and no one is watching any more
In hospital, someone comes by every hour. They ask about your pain, they look at your dressing, they help you stand up. Then you go home, the door closes, and that is that.
Physiotherapy may start straight away, or a few days later: it depends on your surgery, your physiotherapist and your arrangements. In between, there is a stretch where you are the only one keeping an eye on your recovery. It is often the most uncomfortable one, and the one least talked about.
What is happening during those days
Swelling is at its peak. This is not an impression. After a knee replacement, measured swelling is at its highest from the first day and takes months to return fully to normal1. That is why the joint feels tight, warm and hard to bend at this precise moment.
Pain peaks, then falls. The first 48 to 72 hours are the hardest, then it comes down. Knowing that the curve goes down changes how you live through the second night.
The muscle goes on standby. A swollen joint sends a signal that stops the muscle around it from answering properly. This is not weakness and it is not a lack of will. There is a way to make it work anyway, we come back to it below.
These three things happen at the same time, at home, with nobody there to tell you it is normal. That is why these days feel longer than the ones that follow.
Four things to do with your days
Give yourself a timetable. Without the ward rounds, days blur into each other and pain sets the rhythm. Take your painkillers on schedule, including ahead of the night. Put your cold sessions at fixed times. Get up and take a few steps around the house at regular intervals, even briefly.
Act on the swelling. These are the only three things that act on swelling at this stage. Elevate the operated limb whenever you are sitting or lying down. Move often and a little, rather than rarely and for a long time. Apply cold and compression several times a day.
Keep a one line journal. One line a day: your pain out of ten, what you manage to do, what you cannot do yet. It gives you something concrete to show your physiotherapist at the first session, and above all it shows you your progress on the days you feel stuck.
Arrange one visit a day. Someone who drops in, even for twenty minutes, even for nothing. The first days at home are harder alone than with company, and that is not only a matter of logistics.
What should make you pick up the phone
Pain that increases instead of decreasing after a few days. A fever above 38.5 degrees. Discharge or spreading redness on the scar. A calf that is swollen, hard, warm and painful. Sudden shortness of breath or chest pain, which are emergencies.
Nobody will hold it against you for calling for nothing. That is exactly what your team is there for during this period.
Making the muscle work without waiting
A muscle that no longer receives its signal does not wake up on its own, and that is exactly what is happening during these days. Electrical stimulation gets around the problem: the electrodes trigger the contraction you cannot yet produce voluntarily. It is advised to start Compex® sessions from 48 hours after surgery, twice a day2.
It is also one of the few useful things you can do alone at home at this point, while you wait for rehabilitation to take over.
Cold and compression at home
Cryocompression pairs controlled cold with dynamic compression that inflates and deflates like a light massage. It acts on the two things that dominate these first days: pain and swelling.
It is also, very concretely, what gives a day at home its structure. Three to four sessions of 20 to 30 minutes, one of them before bed, put appointments back into a day that has none.
Kolde delivers and sets up the Game Ready® at your home, shows you how to use it, and stays reachable on WhatsApp at any hour. This period lasts between three days and two weeks depending on the protocol. It is short on a calendar and long to live through. It deserves to be organised like the rest.

Sources
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The time course of knee swelling post total knee arthroplasty and its associations with quadriceps strength and gait speed. The Journal of Arthroplasty. 2015.
Pua YH.
DOI 10.1016/j.arth.2015.02.010 · PMID 25737387 -
Early neuromuscular electrical stimulation to improve quadriceps muscle strength after total knee arthroplasty: a randomized controlled trial. Physical Therapy. 2012.
Stevens-Lapsley JE, Balter JE, Wolfe P, Eckhoff DG, Kohrt WM.
DOI 10.2522/ptj.20110124 · PMID 22095207
This article is for information only. It does not replace the advice of your surgeon, doctor or physiotherapist. Always follow the recommendations of your medical team.