If you've got knee arthritis, you've probably been given some pretty unhelpful advice over the years. "Just rest it." "Don't squat." "Avoid stairs at all costs." "Stop exercising before you wear it out completely."

Honestly? Most of that advice is complete rubbish.

I'm not saying you should ignore sharp pain and start running marathons tomorrow, but one of the worst things you can do with knee osteoarthritis is stop using your legs altogether.

Arthritis doesn't automatically make you weaker—doing less does. And when your legs become weak, everyday life starts becoming significantly harder. Getting out of a chair, walking around the shops, climbing stairs, and standing up from the couch are all basic strength tasks.

You don't need fancy equipment or complicated movements. Most people do incredibly well with a handful of simple exercises performed consistently. Here are four of my favourites.

Exercise One: Box Squats

If I could only prescribe one single exercise for most people with knee osteoarthritis, this would be it. It is highly functional because every single day, you have to sit down and stand up multiple times. A box squat simply trains your body to perform that task with better power and mechanics.

How to Do It: Sit on a sturdy chair. Place your feet firmly on the floor slightly underneath you. Lean your chest forward slightly, push through your heels, and stand up completely. Slowly control your descent back down to the seat.
Why It Works: Box squats specifically build quadriceps strength, hip power, and coordination. More importantly, they rebuild your baseline confidence in everyday tasks.
How to Modify It: If it's too difficult or painful on day one, use your hands on the armrests or a bench for assistance, or start with a slightly higher chair. As it becomes easier, challenge yourself by holding a small weight or slowing down the lowering phase.

Exercise Two: Controlled Step-Ups

Stairs are usually one of the first obstacles people notice when their knees start getting sore. Suddenly, they start avoiding them. The problem? Avoiding stairs does absolutely nothing to improve your physical ability to use them. Step-ups are fantastic because they isolate and train this exact movement under control.

How to Do It: Find a low step (like the bottom step of a staircase or a small block). Step up firmly with one leg, bring your trailing leg up to meet it, then step back down safely. Complete a set on one side before swapping legs.
Why It Works: Step-ups challenge single-leg control, balance, and targeted knee extension power. Life is full of steps, curbs, and uneven surfaces across Hervey Bay—this exercise keeps you prepared for them.
How to Modify It: If it's too painful, use a significantly smaller step or hold tightly onto a sturdy rail for support. Gradually reduce the support as your leg strength adapts.

Exercise Three: Seated Leg Extensions

The quadriceps are the large muscles on the front of your thighs, and they are almost always significantly weak in people suffering from chronic knee osteoarthritis. Building stronger quads is one of the safest investments you can make for your joints because they act as your knee's primary stabilizer.

How to Do It: Sit tall in a firm chair. Slowly straighten one knee out in front of you as far as comfortable. Pause at the top for a second, squeeze your thigh muscle, then lower it back down slowly under control.
Why It Works: Leg extensions allow you to specifically isolate and build the quadriceps without placing heavy compressed bodyweight loads through the joint socket.
How to Modify It: If fully straightening your knee is uncomfortable, simply work within a smaller, pain-free range of movement. You can eventually progress this by adding light ankle weights.

Exercise Four: Calf Raises

This one often surprises people. "What do my calves have to do with my knees?" Quite a lot, actually. Your calf muscles cross behind the knee joint, helping absorb force when walking, aiding in balance, and providing your push-off strength. Weak calves frequently contribute to feeling slower and less steady on your feet.

How to Do It: Stand facing a kitchen bench or wall. Rise up smoothly onto your toes, holding the top position briefly, then lower your heels back to the ground slowly.
Why It Works: Calf raises improve lower-limb endurance, walking capacity, and ankle stability, making it much easier to handle uneven terrain confidently.
How to Modify It: Use both hands on the bench for support if your balance feels shaky. To make it harder, try performing them on a single leg or slowing down the lowering phase.

What About Pain During Exercise?

This is where people often become nervous. A little discomfort during or after exercise does not automatically mean you are causing structural damage. Pain and tissue harm are not always the same thing.

If you have been relatively inactive for six months, even a short walk can make your muscles sore. That doesn't mean walking is dangerous; it means your body is temporarily deconditioned. The exact same process happens with arthritis.

A good rule of thumb for training arthritic joints? Your knee should generally feel similar or return back to its baseline pain level by the following day. If a flare-up persists for days, the exercise volume or weight simply needs to be dialed back slightly.

The Secret Isn't The "Perfect" Exercise

People spend a lot of time looking for magic solutions. Honestly, there aren't any. The best exercise is simply the one you can do safely, perform consistently, and gradually progress over time.

You don't need fancy circus tricks. You just need to get your legs a little bit stronger each week.

Need Professional Guidance to Rebuild Your Knee Strength?

At The Physio Don, we work with older adults across Hervey Bay to design customized, progressive exercise plans for knee osteoarthritis. Operating out of the premium strength training environment at LIFT Gym in Pialba, we make sure you learn how to load your joints safely and effectively.

Take the first step toward moving without fear. Read about our specialized <u>Geriatric Physiotherapy options</u> or reach out to us today to get started.

About the Author

Donovan Baker is a physiotherapist and founder of The Physio Don. He holds a Doctor of Physiotherapy and Bachelor of Exercise Science and has spent more than a decade helping older adults improve their strength, balance and independence through physiotherapy and exercise.

Donovan has extensive experience across private practice, residential aged care and community-based rehabilitation, with extensive postgraduate training in gerontology and healthy ageing.

He is also the author of Getting Old Is Sh*t. Here's What To Do About It, a practical guide designed to help older adults stay strong, capable and independent for longer.

Based in Hervey Bay and working throughout the Fraser Coast, Donovan combines physiotherapy, strength training and evidence-based exercise to help people move better and live better for longer.

A Quick Disclaimer

This article is general information only and isn't intended to replace personalised medical advice, diagnosis or treatment. Everybody's situation is different. If you're experiencing pain or you're unsure where to start, speak with your doctor or physiotherapist before beginning a new exercise program.