Short answerNo single step speeds recovery a lot. Exercise in the first months helps, and a home program works as well as clinic visits. Tranexamic acid reduces bleeding. Drains, tourniquets and machines that bend the knee for you did not help in trials.
A few things help a little, several common ones do not
What this page compares
Many things are done before, during and after a knee replacement in the hope of a faster, easier recovery. This page brings together what the trials found for each, with a link to the full page. Most of these have been tested against usual care, not against each other.
Before the operation
- Exercise before surgery (prehab). Not enough evidence yet. It may help a little, but the trials do not agree. Some found a shorter hospital stay and some found no clear gain . See Does exercise before knee or hip replacement help recovery?
During the operation
- Tranexamic acid. Good evidence it helps. It cut blood loss and the need for a blood transfusion, without more blood clots in the legs . See Does tranexamic acid reduce blood loss in joint replacement?
- Spinal rather than general anaesthesia. Probably helps a little. A large review found fewer complications with spinal or epidural anaesthesia, mostly from observational studies . See Is spinal anaesthesia better than general anaesthesia?
- Tourniquet. Probably does not help. It shortens the operation by a few minutes, but probably brings more pain on the first day and more serious complications . See Does a tourniquet help in knee replacement?
- Subvastus (muscle-sparing) approach. Probably helps a little, for a short time. It may give a slightly easier first week, and after that results look the same as the standard approach . See Does the subvastus approach speed recovery?
- Wound drains. Probably does not help. Drains did not lower infection or wound problems, and more people needed a blood transfusion . See Do drains after joint replacement help?
- Robotic surgery. Places the implant a little more accurately, but patients did not report better pain or function. See Does robotic knee replacement give better results?
After the operation
- Aspirin to prevent blood clots. Not enough evidence yet. Two large trials point in different directions. Aspirin worked as well as rivaroxaban after a short course of rivaroxaban , but aspirin on its own did worse than enoxaparin injections in a larger Australian trial . See Is aspirin enough to prevent blood clots after joint replacement?
- Ice and cold therapy. Not enough evidence yet. It may help a little in the first days, with less blood loss, pain and swelling and a better knee bend, but the evidence is of low certainty . See Does ice help after knee replacement?
- Continuous passive motion machines. Probably does not help. Machines that bend the knee for you made little difference to knee bend, pain or function . See Do continuous passive motion machines help after knee replacement?
- Physiotherapy exercise. Probably helps a little. Exercise improved function and pain at three to four months compared with minimal physiotherapy, and home programs did as well as clinic visits . See Does physiotherapy help after knee replacement?
The bigger picture
No single step makes recovery dramatically faster. The things with the clearest benefit are about safety, such as tranexamic acid to reduce bleeding, and about effort, such as keeping up the exercises in the first months. Several things that used to be routine, such as drains, tourniquets and continuous passive motion machines, did not help in trials. Recovery from a knee replacement takes months, and most of the gain comes from steady exercise and walking.
Risks and effort
The effort is mostly yours. Exercises are needed several times a week for at least three months. Some soreness and swelling are expected. Tell your surgeon early if the knee becomes red, hot, increasingly painful or very stiff, or if your calf becomes swollen and painful.
What usually works instead
Follow your surgical team’s plan for blood clot prevention and pain relief, start the exercises you are given, and walk a little more each day. See Total Knee Replacement.
Questions people ask
What is the fastest way to recover from a knee replacement?
There is no shortcut. In trials, regular exercise in the first months improved function and pain, and a home program did as well as clinic visits. Ice may help a little in the first days. Machines that bend the knee for you did not help.
What are the mistakes to avoid after a knee replacement?
The common ones are stopping the exercises too early, waiting too long to report a stiff knee, and ignoring swelling, redness or pain that is getting worse. Follow the blood clot prevention plan you are given.
Do I need to go to physiotherapy sessions?
Exercise matters more than where you do it. In the trials, a home program with a physiotherapy check did as well as clinic visits for function and pain.
Can I ice my knee too much?
The trials did not test this. They used cold packs or cold therapy devices in the first days after surgery. Protect your skin with a cloth and follow the instructions you are given.
Does exercise before surgery make recovery faster?
It may help a little, but the trials do not agree. It is still worth staying as active and strong as you can before the operation.
Sources
Select a source to read what the study or guideline found, in plain words, with a link to the original.
Last reviewed 26 October 2026. Next review due October 2028. General information only. It does not replace advice from your own doctor.
