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Musculoskeletal

Osteoarthritis

Osteoarthritis is a long term condition in which a joint becomes painful and stiff, and exercise is first line care for it, not a last resort. The whole joint is involved, not only the cartilage.

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Understanding the condition

Osteoarthritis (OA) is a long term condition in which a joint becomes painful and stiff and does not move as freely. The whole joint is involved, not just the cartilage, so bone, ligaments, tendons and the muscles around the joint all change.1 It most often affects the knees, hips, hands and fingers, spine and feet.1 Knee osteoarthritis alone affects around 1.2 million people in Australia.2 It is not the same as rheumatoid or psoriatic arthritis, which are autoimmune conditions.1

Exercise and physical activity are core treatment, not a last resort. Australian guidance strongly recommends land based exercise such as walking, muscle strengthening and Tai Chi for everyone with knee osteoarthritis, and an individualised program for hip osteoarthritis.3,4 Feeling some pain or discomfort while you exercise is normal and does not mean you are damaging the joint.5 Most people do not need an X-ray, MRI or CT scan to start treatment.5 At PDC an exercise physiologist or physiotherapist prescribes and progresses the program. Your GP manages pain medicines, and an orthopaedic surgeon decides about joint replacement.1,5

Load management means matching how much you ask of the joint to what it can handle today, then building that capacity over weeks. In practice it looks like steady doses rather than big swings: shorter, more frequent walks instead of one long one, and a planned increase only when the last step has settled. Guidance is to progress by frequency, duration and intensity rather than pushing through.4 Staying active and managing weight can delay or avoid surgery for many people.5 Knee arthroscopy is not recommended for osteoarthritis.5 A joint that suddenly becomes hot, swollen and very painful is a different problem, septic arthritis, and is an emergency.6

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Osteoarthritis

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

  • Joint pain and stiffness, often worse with activity and easing with rest, and sometimes present at rest as the condition progresses.
  • Swelling around the joint that can feel hard and bony.
  • Clicking or grating when you move the joint.
  • Weakness in the muscles around the joint, or a feeling that it might give way.
  • Trouble with everyday movements: walking, climbing stairs, or standing up from a chair.
  • Urgent: a joint that suddenly becomes swollen, hot and very painful is not an osteoarthritis flare. Go to your nearest emergency department, or call 000 and ask for an ambulance. Fever, chills or feeling generally unwell make it more urgent again, but do not wait for them.

How our team helps

  • An ESSA accredited exercise physiologist assesses the joint and builds a strength and walking program you can keep doing, one to one or in a small group.
  • Physiotherapy for people aged 16 and over, including hands-on therapy, dry needling, cupping and tool assisted soft tissue therapy when pain is limiting what you can do.
  • Hydrotherapy in a warm pool when land based exercise is too sore to start with, and shockwave therapy where your physiotherapist judges it useful.
  • Accredited Practising Dietitian consultations for weight and nutrition, which Australian guidance links to less knee pain.
  • Direct referral for imaging by our physiotherapists when your presentation needs it, so you are not sent back and forth.
  • Appointments in clinic, at home through Support at Home, in residential aged care, or by telehealth, with NDIS, DVA and WorkCover WA accepted.

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

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

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

Dietitian
Dietitian
Allied health team
Dietitian
Personalised nutrition advice from Accredited Practising Dietitians to help manage blood glucose levels, weight management and overall nutritional health.
Read more

Related services

Related conditions

Terms explained

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

Sources and clinical review

This page follows Australian guidance: the Australian Commission on Safety and Quality in Health Care Osteoarthritis of the Knee Clinical Care Standard (2024) and the RACGP Guideline for the management of knee and hip osteoarthritis (2018).

  1. Healthdirect Australia. Osteoarthritis. Last reviewed February 2026. https://www.healthdirect.gov.au/osteoarthritis
  2. Australian Commission on Safety and Quality in Health Care. Osteoarthritis of the Knee Clinical Care Standard. 2024. https://www.safetyandquality.gov.au/standards/clinical-care-standards/osteoarthritis-knee-clinical-care-standard
  3. Royal Australian College of General Practitioners. Guideline for the management of knee and hip osteoarthritis: summary, plain language. 2018. https://www.racgp.org.au/clinical-resources/clinical-guidelines/key-racgp-guidelines/view-all-racgp-guidelines/knee-and-hip-osteoarthritis/summary-plain-language
  4. Royal Australian College of General Practitioners. Guideline for the management of knee and hip osteoarthritis: exercise. 2018. https://www.racgp.org.au/clinical-resources/clinical-guidelines/key-racgp-guidelines/view-all-racgp-guidelines/knee-and-hip-osteoarthritis/recommendations/non-pharmacological-interventions/exercise
  5. Australian Commission on Safety and Quality in Health Care. Consumer guide: Osteoarthritis of the Knee Clinical Care Standard. August 2024. https://www.safetyandquality.gov.au/sites/default/files/2024-08/consumer-guide-osteoarthritis-knee-clinical-care-standard.pdf
  6. Healthdirect Australia. Septic arthritis. Last reviewed October 2025. https://www.healthdirect.gov.au/septic-arthritis
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Common questions

Is exercise safe if my osteoarthritis is severe?
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Yes. Australian guidance for knee osteoarthritis states that exercise is safe for your knee even if the osteoarthritis is severe. It also says that feeling some pain or discomfort while exercising is normal and does not mean you are damaging the joint. If pain stays high after a session, tell your exercise physiologist or physiotherapist so the dose can be adjusted rather than abandoned.

Do I need a scan to find out if I have osteoarthritis?
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Usually not. Australian guidance says most people with knee osteoarthritis do not need X-rays, MRI or CT scans, and that scans will not help decide your initial treatment. Your GP can diagnose it from your history and an examination. If something in your presentation does need imaging, PDC physiotherapists can refer you directly.

Will I need a knee replacement?
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That is a decision for an orthopaedic surgeon, made with you, and it is not the first step. Australian guidance notes that most people who are physically active and manage their weight can delay or avoid surgery. Knee arthroscopy is not recommended for knee osteoarthritis. PDC clinicians do not decide about surgery and do not refer for it.

What does load management actually mean?
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It means matching what you ask of the joint to what it can handle now, then building that up in planned steps. Guidance is to progress a program by how often, how long and how hard you exercise, rather than by pushing through pain. In practice that often means several shorter sessions instead of one big effort, and holding a level until it settles before you add more.

Does losing weight help my knees?
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It can. Australian guidance strongly recommends weight management alongside exercise for people living with knee osteoarthritis who are carrying excess weight, and expects losing weight to reduce knee pain. Our Accredited Practising Dietitians work on this with you. No diet cures osteoarthritis, so nutrition sits beside the exercise program rather than replacing it.

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

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