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Surgery rehabilitation

Knee replacement rehabilitation

Physio after a knee replacement helps you regain bending, straightening, strength and walking. We guide you before and after surgery at PDC Health Hub in Perth.

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Understanding the condition

A knee replacement (total knee arthroplasty) swaps worn joint surfaces for an implant, most often because of advanced arthritis. Australian guidance says most people with knee osteoarthritis can manage without surgery, and replacement is considered only after about 12 weeks of exercise and other non-surgical care.2 Most people leave hospital within one to four days, and strength and flexibility keep improving for about 12 months.1 Registry data show 10-year revision rates of about 2.8% to 9.2%, depending on the group.6

Physiotherapy usually starts within 24 hours of surgery and focuses on bending, straightening, strength, balance and walking, according to a US physiotherapy guideline.3 Exercise and education before surgery (prehabilitation) is commonly offered. The evidence is modest: a review rated it low strength for building strength and shortening hospital stay,4 and a meta-analysis found less pain before knee replacement, small gains before hip replacement and a shorter stay after knee replacement only, with unclear benefit after surgery.5 Australian standards still advise staying active before surgery.2

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Knee replacement rehabilitation

What to look out for, and how we help

Symptoms are a guide, not a diagnosis. Your GP confirms the diagnosis; our team helps you manage it day to day.

What you might notice

  • Ongoing knee pain, stiffness or reduced movement that limits walking, stairs or sleep, and may lead you and your surgeon to consider replacement
  • Some swelling, warmth and tightness around the new knee for weeks after surgery, which we help you manage
  • Difficulty fully bending or straightening the knee
  • Weak thigh muscles, trouble with stairs or getting out of a chair, or still needing a walking aid
  • Loss of confidence, or uncertainty about how much to do and when to return to normal activities
  • Call 000 or go straight to an emergency department for a red, swollen or painful calf, chest pain or shortness of breath (possible blood clot in the leg or lung), and seek urgent medical review for an incision that is red, hard, hot, swollen or draining, a temperature over 38.5°C or chills, or sudden knee pain with less movement and being unable to put weight on the leg.

How our team helps

  • Assessment before surgery and after discharge, checking movement, strength, swelling, walking and your goals
  • Individual exercise programs that progress your range of movement, strength, balance and walking
  • Hands-on therapy where it helps you move and exercise more comfortably
  • Walking aid prescription and advice as you move from crutches or a frame to a stick and then without
  • Hydrotherapy and group exercise classes once your surgeon agrees and the wound has healed
  • Return to work or activity planning, and reports for your GP, surgeon, insurer or NDIS planner

Your PDC care team

The teams and services that most often support people with this condition. They work from one shared plan, and one GP referral reaches all of them.

Allied health teams

Physiotherapy
Physiotherapy
Allied health team
Physiotherapy
Musculoskeletal treatment and rehabilitation to help you move better and manage pain.
Read more

Exercise Physiology
Exercise Physiology
Allied health team
Exercise Physiology
Safe, effective exercise programs designed by Accredited Exercise Physiologists for chronic condition management.
Read more

Related services

Related conditions

Terms explained

Plain English explanations for this condition are being added.
See all conditions

Sources and clinical review

Our care follows the ACSQHC Osteoarthritis of the Knee Clinical Care Standard, the American Physical Therapy Association guideline for total knee arthroplasty, and your surgeon's rehabilitation protocol.

  1. Healthdirect Australia. Knee replacement. Healthdirect Australia; reviewed August 2023.
  2. Australian Commission on Safety and Quality in Health Care. Osteoarthritis of the Knee Clinical Care Standard. Sydney: ACSQHC; 2024.
  3. Jette DU, Hunter SJ, Burkett L, et al. Physical therapist management of total knee arthroplasty. Phys Ther. 2020 (American Physical Therapy Association clinical practice guideline).
  4. Konnyu KJ, Thoma LM, Cao W, et al. Prehabilitation for total knee or total hip arthroplasty: a systematic review. Am J Phys Med Rehabil. 2023;102(1):1-10.
  5. De Klerk TC, Dounavi DM, Hamilton DF, Clement ND, Kaliarntas KT. Effects of home-based prehabilitation on pre- and postoperative outcomes following total hip and knee arthroplasty: a systematic review and meta-analysis. Bone Joint Open. 2023;4(5):315-28.
  6. Australian Orthopaedic Association National Joint Replacement Registry. Lay summary: hip, knee and shoulder replacement 2025 supplementary report. Adelaide: AOANJRR; 2025.
  7. Bone and Joint Health Strategic Clinical Network, Alberta Health Services. Knee replacement: when to get medical help. Alberta Health Services; reviewed 7 October 2025 [cited 2026 Oct 4].
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Common questions

How long do I need physio after a knee replacement?
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It depends on your progress and your surgeon's protocol. Physiotherapy usually starts in hospital within a day of surgery, and strength and movement keep improving for about 12 months.<sup>1,3</sup> Visits generally taper as you meet your goals.

Is physio before a knee replacement worth it?
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Exercise and education before surgery is recommended in a US guideline, and Australian standards advise staying active.<sup>2,3</sup> A review rated the evidence low strength for better strength and a shorter stay,<sup>4</sup> and a meta-analysis found less pain before knee surgery, with unclear benefit afterwards.<sup>5</sup>

When can I drive or go back to work after a knee replacement?
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This varies with your job, which knee was replaced and how you are moving, so your surgeon sets the clearance. We help you plan a graded return to work and can write a report for your employer or insurer.

Why is my new knee still sore or stiff months later?
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Recovery takes about a year, and some people have continued pain.<sup>1</sup> Tell us or your surgeon if you stop improving, if movement is getting worse, or if the knee is hot and swollen. We can review your exercise program and liaise with your surgeon.

Do I need a referral, and what funding is available?
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No referral is needed for private appointments. With a GP Chronic Condition Management Plan, Medicare rebates apply to up to five eligible allied health services a calendar year. Private health extras may also contribute, and workers compensation or DVA may apply in some cases.

Not sure where to start?

Tell us what is going on and we will point you to the right discipline, or to more than one. Most people start with a single appointment and leave with a plan the rest of the team can see.

Or go straight to a service

Phone (08) 6110 0570 · Medicare, NDIS, DVA and private options across our services

For GPs and health professionals

Referring a patient with this condition?

Send an online referral in under two minutes. One referral reaches every discipline at PDC Health Hub.