Written by Michael Rizk, Co-Founder & Senior Physiotherapist
TL;DR: Physiotherapy helps both before and after a total knee replacement, from strengthening the joint pre-surgery to guiding your rehab afterwards. Most people spend a few days in hospital, then take three to six months to return to normal activities, with full recovery closer to twelve months. If you’re weighing up surgery, a physio assessment is the best place to start.
- Physio supports you before surgery (prehab) and after (rehab).
- Hospital stay is typically a few days, full recovery up to twelve months.
- See a physio before deciding on surgery, not just after.
Whether you’re weighing up whether you need a total knee replacement or you already have surgery booked, a physio assessment is the best place to start finding out what will actually help. A total knee replacement resurfaces the worn ends of the femur and tibia with metal and plastic components, replacing the cartilage that’s worn away. It’s most commonly needed for advanced osteoarthritis, but surgery is rarely the very first step.
What Is a Total Knee Replacement?
A total knee replacement, also called a knee arthroplasty, is the same procedure under two different names. Surgeons apply a metal shell to the end of the femur and a metal plate to the top of the tibia, with a plastic spacer between them.
It’s most commonly performed for advanced osteoarthritis or rheumatoid arthritis, though trauma and severe joint damage can also lead here. Like any surgery, it carries real risks, including infection and ongoing instability, so it’s a decision worth making carefully.
Do You Need Surgery, or Could Physio Help First?
Conservative management with physiotherapy should always be tried before surgery. A combination of hands-on treatment, targeted exercise, and activity modification can meaningfully reduce knee pain, sometimes enough to delay surgery for years, sometimes enough to avoid it altogether.
A physio assessment early on gives you a clearer picture of where you actually sit, rather than jumping straight to a surgical decision.
Preparing for Surgery: Why Prehab Matters
If surgery is the right path for you, what you do beforehand matters. This is called prehabilitation, or prehab, and it typically focuses on strengthening the quadriceps and hip muscles in the weeks before your operation.
A 2022 meta-analysis of randomised controlled trials found that prehabilitation before total knee replacement significantly shortens hospital stay, though its effect on long-term functional recovery is still unclear (Su et al., 2022, Journal of Orthopaedic Surgery and Research).
Prehab is also a good time to prepare your home, toilet frames, bathroom rails, and a plan for the first few weeks without stairs all make the return home easier. Lining up help from family or friends for cooking and cleaning is worth arranging in advance too.
What Happens After Surgery?
Most people spend a few days in hospital before returning home. Once you’re home, book in with a physio as soon as you reasonably can.
Early rehab focuses on restoring range of motion, gradually building strength, and getting you back to the activities that matter to you. This isn’t a quick fix. There’s real discomfort from both the incision site and the new joint in the early weeks, and the rehab work is what gets you through it.
Recovery Timeline: What to Expect
Most people return to everyday activities within three to six months. Full recovery, including the last of the strength and confidence in the joint, often takes closer to twelve months.
This varies by individual factors like age, fitness beforehand, and how closely the rehab program is followed.
When To See A Physio
Whether you’re still deciding on surgery, preparing for it, or recovering afterwards, a physio assessment is what tells you exactly where you stand and what to do next.
See one early if you’re managing ongoing knee pain, before your surgery date if one’s booked, and as soon as possible after returning home post-op.
Key Takeaways
- Book a physio assessment first. We can tell you where you actually stand and what your realistic options are.
- A total knee replacement and a total knee arthroplasty are the same procedure.
- Conservative physiotherapy should always be tried before surgery is considered.
- Prehab, strengthening before surgery, can shorten your hospital stay.
- Most people return to normal activities within three to six months, with full recovery closer to twelve.
- Rehab after surgery matters as much as the operation itself.
If you’re weighing up a knee replacement, or you’ve already got one booked, our physiotherapists can help you prepare and recover. Book an appointment online at your nearest iMove Physiotherapy clinic.
FAQ
Is a total knee replacement the same as a knee arthroplasty?
Yes, they’re the same procedure. “Arthroplasty” is simply the clinical term for joint replacement surgery.
Do I definitely need surgery if I have knee osteoarthritis?
Not necessarily. Many people manage their symptoms well with physiotherapy, and surgery is generally considered once conservative options haven’t given enough relief.
How long will I be in hospital?
Most people spend a few days in hospital before returning home, though this varies by individual circumstances and surgical approach.
Does prehab actually make a difference?
Research shows prehab can shorten your hospital stay. Its effect on longer-term recovery is less clear, but the strength and confidence gained beforehand can still help you handle the early post-op period.
When can I go back to normal activities?
Most people return to everyday activities within three to six months, with full recovery often taking closer to twelve months.
Should I see a physio before or after surgery?
Both. A physio can help you decide whether surgery is the right step, prepare you beforehand if it is, and guide your rehab afterwards.
iMove Physiotherapy clinics: Rozelle | Panania | Clovelly | Waverley
