Co-authored by Dr Stephanie Mathieson

It is estimated that around 20% of Australians suffer some form of chronic pain. Arthritis is one of the commonest forms of chronic pain in Australia; affecting 1 in 6 Australians, equating to over 3.9 million people¹. Osteoarthritis is a common form of arthritis, commonly affecting the hips, knees and fingers with degenerative changes. Osteoarthritis can develop at any age but is more common in those over 40 years or have joint injuries.

Currently, there is no cure for osteoarthritis, but the outlook is positive. Osteoarthritis guidelines recommend healthy eating, staying active and maintaining a healthy weight; thus, a weight loss program may be needed if you are overweight^2,3. 

Exercise is strongly recommended for people as it keeps the joints and muscles, healthy and flexible with the added benefit of preventing other health problems. A recent trial⁴ has shown that high-intensity strength training (a set exercise regimen with strength exercises at 75-90% of the person’s strength capacity) was no better than low-intensity strength training (the same regime but using only 30-40% of person’s maximum strength). Both groups did their 60-minute strength training sessions, 3 times a week for 18 months at the research centre. So, it is about doing consistent exercise not necessarily going overboard on the weight training.

Physical activity has also been shown through a high-quality trial to reduce pain and disability greater than a corticosteroid injection into the knee⁵. Although corticosteroid injection may be appropriate guideline recommendation for some patients^2,3, over the long-term (i.e. one year), you are better off undertaking physical activity (e.g. stationary cycling, some strength training (i.e. weights)) to manage osteoarthritis. 

Granted those with osteoarthritis may have flare-ups in their pain. Some people may find that a trial of other therapies beneficial, such as heat, manual therapy or analgesic medicines like non-steroidal anti-inflammatory drugs (NSAIDs). Both oral and topical (e.g. gels) NSAIDs are guideline recommendations for the management of knee osteoarthritis^2,3, but it is not safe for some people to take NSAIDs, so speak to your doctor or pharmacist. I recommend (Dr Walker) celecoxib 200mg to my patients on the one or two days a week they are performing more intense exercise or longer walks (e.g. on golf days) as this has been shown to be the safest of the NSAIDs but still not without side effects for some people. Treatments that are strongly not recommended for knee osteoarthritis are opioid analgesics and stem cell therapy².

References

1. Arthritis Australia. Osteoarthritis. Available at: https://arthritisaustralia.com.au

2. The Royal Australian College of General Practitioners. Guideline for the management of knee and hip osteoarthritis. 2nd edition. East Melbourne, Victoria. 2018.

3. Kolasinski SL, et al. 2019 American College of Rheumatology/Arthritis Foundation guideline for the management of osteoarthritis of the hand, hip, and knee. Arthritis & Rheumatology 2020;72(2):220-33.

4. Messier SP, et al. Effect of high-intensity strength training on knee pain and knee joint compressive forces among adults with knee osteoarthritis: The START randomized clinical trial. JAMA 2021;325(7):646–657.

5. Deyle GD, et al. Physical Therapy versus Glucocorticoid Injection for Osteoarthritis of the Knee. New England Journal of Medicine 2020;382(15):1420-1429.

Dr Stephanie Mathieson is a Research Fellow at the Institute for Musculoskeletal Health, University of Sydney.