In short
Two patients can have identical operations by the same surgeon and end up with very different knees. The difference is almost always what happened in the weeks afterwards.
Patients research surgeons, implants and techniques at length, then treat physiotherapy as an optional extra. In practice, the operation creates the opportunity and rehabilitation determines what you get from it.
Why the early weeks matter disproportionately
After surgery the body lays down scar tissue as part of healing. If a joint is not moved through its range while that is happening, the scar matures in a shortened position and the joint stiffens. Restoring movement later is considerably harder and sometimes needs a further procedure.
Muscle loss is equally rapid. Strength falls measurably within days of surgery, and the quadriceps in particular switch off after knee procedures. Re-activating them early is far easier than rebuilding from scratch months later.
What good rehabilitation looks like
- 1Phase one, protection. Control swelling, restore full extension, reactivate the muscle, walk safely.
- 2Phase two, movement. Regain full range, normalise walking pattern, remove reliance on aids.
- 3Phase three, strength. Progressive loading of the muscles around the joint.
- 4Phase four, function. Return to the specific demands of your work, sport or daily life.
Each phase has criteria for moving on. Progressing on the calendar rather than on capability is how setbacks happen.
What you control
- Doing prescribed exercises daily, in short frequent sessions rather than one long one
- Taking pain relief before rehabilitation sessions so pain does not limit movement
- Using ice and elevation after exercise to control swelling
- Being honest with your physiotherapist about what you are actually doing at home
- Not comparing your pace to someone else's — recovery varies widely
When to raise a concern
Movement going backwards rather than forwards, swelling that increases rather than settles, or a sudden change in pain all warrant review. Problems caught early are usually fixable; the same problem at three months often is not.
Our physiotherapy team works alongside the surgical team so that your rehabilitation plan matches exactly what was done in theatre.
Frequently asked questions
How soon should physiotherapy start?+
Usually within a day of surgery for joint replacement and most ligament reconstructions. Early controlled movement prevents stiffness, which is far easier to avoid than to treat.
Is it normal for physiotherapy to hurt?+
Some discomfort is expected, particularly when restoring movement. Sharp pain, or pain that lasts for hours afterwards, is a signal to adjust the programme rather than to push through.
Can I just do exercises at home from a video?+
Home exercise is essential, but it works best alongside supervised assessment. A physiotherapist adjusts load, checks technique and catches problems such as a knee not fully straightening while it is still correctable.
This article is general health information, not medical advice, and it cannot account for your individual circumstances. Please consult a qualified orthopaedic specialist about your own symptoms before making treatment decisions.
All articles
