Being told you have knee osteoarthritis, often shortened to knee OA, can feel confronting – especially if someone has described your knee as ‘bone on bone’.
It can make the knee sound worn out, fragile and beyond help. It can also make exercise feel risky, as though every step, squat or stair is causing more damage.
But knee osteoarthritis is usually more manageable than that.
Knee osteoarthritis is a whole-joint condition. It can involve pain, stiffness, swelling, reduced strength, lower confidence with movement, and changes in how much activity your knee currently tolerates. Importantly, the amount of arthritis seen on an X-ray does not perfectly explain how much pain someone feels. Some people have significant imaging changes with manageable symptoms, while others have a lot of pain with relatively mild imaging findings.
This is one reason why knee osteoarthritis treatment should not be based on an X-ray alone. The Australian Osteoarthritis of the Knee Clinical Care Standard notes that imaging is not routinely needed to diagnose knee osteoarthritis, and that imaging findings often correlate poorly with symptoms. A good plan should consider your symptoms, your strength, your activity levels, your goals, and how your knee responds to load over time.
Why ‘bone on bone’ can be unhelpful
The phrase ‘bone on bone’ is common, but it can be misleading.
It can make people feel as though their knee is too damaged to use, that exercise will make things worse, or that surgery is the only real option. Understandably, this can lead people to do less. Over time, doing less can make the knee feel weaker, stiffer and less capable.
That does not mean imaging is useless. X-rays can be helpful in some situations, particularly when surgery is being considered or when symptoms are unusual. But for many people, the best first step is not another scan. It is a clear explanation, a plan, and a way to start rebuilding confidence in the knee.
The Australian clinical care standard also encourages clinicians to avoid unhelpful language such as ‘wear and tear’ and ‘bone-on-bone’, because it can reinforce the belief that activity should be avoided or that surgery is needed to fix the problem.
Knee osteoarthritis does not always get worse
A common fear is that knee osteoarthritis will inevitably worsen until a knee replacement is needed.
For some people, surgery is the right option. Knee replacement can be very helpful when pain and disability remain severe despite good non-surgical management.
But many people with knee OA can improve their pain, function and confidence without surgery. The goal is not necessarily to ‘reverse’ arthritis on a scan. The goal is to help you move better, feel stronger, manage symptoms, and return to more of the activities that matter to you.
The knee can often tolerate more than people expect – but it usually needs the right starting point, the right progression, and enough time to adapt.
Exercise is treatment, not just general advice
For knee osteoarthritis, exercise is not just a vague suggestion to ‘keep active’. It is one of the core treatments.
A good knee OA exercise program may include:
- strengthening the muscles around the knee, hip and lower limb
- gradually improving walking, stairs, squatting or other daily activities
- building general fitness
- improving confidence with loading the knee
- adjusting activity during flare-ups
- helping you find a routine you can actually maintain
This does not mean pushing through severe pain or forcing exercises that clearly aggravate your symptoms. It means finding the right starting point and progressing gradually.
Some discomfort during exercise can be normal, especially when starting again after a period of doing less. Pain does not automatically mean damage. What matters is how your symptoms respond, whether they settle afterwards, and whether your overall function is improving over time.
The NICE osteoarthritis guideline recommends therapeutic exercise for all people with osteoarthritis, tailored to their needs. This may include local muscle strengthening and general aerobic exercise.
What about the GLA:D program?
GLA:D stands for Good Life with osteoArthritis from Denmark. It is a structured education and exercise program for people with hip or knee osteoarthritis.
Programs like GLA:D can be helpful because they do more than give people a list of exercises. They combine education, supervised exercise and self-management strategies to help people better understand their condition, build strength and feel more confident using their knee.
If you are searching for a GLA:D program in Sydney, it may be worth looking for a local certified provider. However, GLA:D is not the only way to manage knee osteoarthritis well. The key ideas behind effective knee OA treatment – education, progressive strengthening, graded exercise, symptom management and building confidence with movement – can also be applied through a well-designed physiotherapy plan.
Our approach to knee osteoarthritis is built around many of these same principles. We help you understand what is going on, find the right starting point, build strength gradually, and create a plan that fits your knee, your goals, your training history and your lifestyle.
You can read more about the structure of the program through GLA:D Australia.
Can exercise delay knee replacement surgery?
Exercise is not a guarantee that surgery will never be needed. That would be too simplistic.
However, good non-surgical management can help many people reduce pain, improve function and potentially delay or avoid surgery. In a two-year trial of people with moderate-to-severe knee osteoarthritis who were eligible for total knee replacement, two out of three people delayed surgery for at least two years after non-surgical treatment.
This does not mean everyone should avoid surgery. It means many people are worth giving a proper non-surgical plan first.
The question is not always, ‘How bad does the X-ray look?’
A better question is, ‘Have we given the knee a proper chance with the right education, exercise and support?’
What else helps knee osteoarthritis?
Exercise is a major part of knee OA treatment, but it is not the only part.
Depending on the person, management may also include:
- education about knee osteoarthritis and pain
- pacing and activity modification during flare-ups
- weight management support where relevant
- strategies to improve sleep, confidence and general health
- short-term pain relief to help maintain movement
- review with a GP, specialist or surgeon when symptoms remain severe
For people living with excess weight, weight loss can reduce knee pain and improve mobility. However, this should be discussed in a supportive and non-judgemental way. Management should still be realistic, individualised and based on what matters to the person.
When should you seek help?
It is worth seeing a physiotherapist, GP or appropriate health professional if:
- your knee pain is stopping you from walking, stairs, exercise or daily activities
- you are unsure whether your pain is knee osteoarthritis
- your knee is swollen, hot, giving way, locking, or rapidly worsening
- you have lost confidence using your knee
- you have been told you have arthritis but were not given a clear plan
- you are considering injections or surgery and want to understand your options
A physiotherapist can help assess your knee, explain what is likely going on, and build a plan that suits your current capacity and goals.
The main message
Knee osteoarthritis can be painful, frustrating and limiting – but it does not mean your knee is ruined.
For many people, the right education and exercise plan can reduce pain, improve strength, build confidence and help them get back to more of what they enjoy.
If you are in Sydney and looking for help with knee osteoarthritis, knee OA exercise or arthritis physiotherapy, seeing a physiotherapist can help you understand your options and make a clear plan forward.
