knee replacement Archives - Praxis Physiotherapy

Navigating Knee Osteoarthritis: A Physio-Centric Pathway to Strength and Mobility Before Surgery

by Stephen Timms | Apr 22, 2025 | Knee, Reformer Pilates

Knee osteoarthritis (OA) is one of the most common causes of chronic pain and mobility restriction in Australians over 45. Whether you’re a weekend warrior, an active grandparent, or someone just trying to keep up with the daily demands of life, OA can slowly erode your confidence in movement — long before X-rays show the full extent of joint degeneration.

At Praxis Physiotherapy, we take a forward-thinking, collaborative approach to managing knee OA. Working closely with renowned orthopaedic knee surgeon Dr. Kelly Macgroarty and drawing from our extensive experience with high-performance athletes and everyday patients alike, we believe the journey toward better knees starts well before surgery — and, for many, might even avoid or delay it altogether.

What is Knee Osteoarthritis?

Knee OA is a progressive condition involving the breakdown of joint cartilage and underlying bone, typically leading to:

Pain during or after activity
Morning stiffness or stiffness after rest
Swelling and inflammation
Loss of flexibility and range of motion
Difficulty with stairs, kneeling, or prolonged standing

Radiographic OA becomes more common with age, but symptoms often precede visible changes on X-ray. Up to 30% of people over 65 show radiographic OA, yet many remain functionally capable — highlighting the importance of early, movement-based interventions (Naja et al., 2021).

Why a Physio-Led Model Before Knee Replacement?

Surgery is not the first or only option. A large systematic review of 19 randomized controlled trials found that non-surgical interventions such as physiotherapy, platelet-rich plasma (PRP), and structured exercise were associated with meaningful improvements in pain and function over 12 months (Naja et al., 2021). Physiotherapy, in particular, is consistently supported by international guidelines as a first-line treatment (Fransen et al., 2015; Bennell et al., 2014).

Traditionally, knee OA rehab has emphasised quadriceps strengthening — and for good reason, as quadriceps weakness is strongly linked to OA-related pain and disability. However, more recent research suggests that focusing exclusively on the quadriceps may be too narrow. Programs that include hip (gluteal), hamstring, and calf muscle strengthening are now shown to be superior in improving functional outcomes, especially for activities like walking, stair climbing, and maintaining balance (Bennell et al., 2014). This broader approach addresses the full kinetic chain around the knee, optimises joint load distribution, and better supports long-term movement efficiency.

At Praxis, our physios:

Assess gait, strength, joint mobility, and function
Design individualised exercise programs targeting quadriceps, glutes, and calf strength
Implement manual therapy techniques to restore joint mobility
Provide pain education, load management advice, and real-world strategies
Monitor progress and adjust programs over time

This proactive approach not only builds resilience in the knee but also prepares the joint and surrounding muscles should surgery eventually be required.

Booster Sessions: Keeping Gains, Lowering Costs

An often-overlooked strategy is the use of booster physiotherapy sessions — structured follow-ups after an initial rehab program. Research by Bove et al. (2018) showed that exercise programs with booster sessions at 3, 6, and 12 months were not only more clinically effective but also more cost-effective over a two-year period compared to standard physiotherapy care.

At Praxis, we now embed these booster sessions into long-term OA management. They help patients:

Maintain strength and conditioning gains
Stay accountable with home programs
Troubleshoot new symptoms early
Reduce future health care costs and medication reliance

What About Injections and Other Adjuncts?

We often collaborate with GPs and orthopaedic specialists to incorporate adjunct treatments where the evidence supports it:

Platelet-rich plasma (PRP) injections showed significant long-term benefit for pain and function, with improvements of ~20 points on the WOMAC index. PRP ranked just behind stem cells as the most effective non-surgical treatment in a large 2021 network meta-analysis (Naja et al., 2021).
Hyaluronic acid (HA) injections have shown mixed results. A review of overlapping meta-analyses concluded that HA is likely safe and modestly effective, especially in early-stage OA, although guideline recommendations remain inconsistent (Xing et al., 2016).

Ultimately, our philosophy is to build strong knees first, and complement physiotherapy with interventions like PRP or HA only when clinically indicated and appropriately timed.

Surgical Collaboration

In more advanced cases, where conservative management fails, we work closely with Dr. Kelly Macgroarty, one of Queensland’s leading knee surgeons. Our relationship allows:

Streamlined triage for surgical consultation
Shared prehabilitation planning to improve surgical outcomes
Integrated post-operative rehab, using in-clinic gym equipment and reformer Pilates to accelerate return to function

This continuity ensures you’re never left navigating knee OA alone — whether your journey stays entirely within physio care or progresses to surgical management.

Why Praxis Physiotherapy?

At Praxis, we’ve built our care model around best-practice guidelines, decades of elite sport and private practice experience, and a shared goal of keeping our patients active, independent, and thriving.

Our Teneriffe, Carseldine and Buranda clinics offer:

In-clinic rehab gyms
Reformer Pilates for joint-friendly loading
Real-time strength testing technology
Physios with elite sports and post-surgical rehab experience

Take the First Step

If you or someone you love has been told you’re “heading for a knee replacement,” don’t wait. There is so much we can do to reduce pain, improve function, and build confidence in your knees — surgery or not.

Book an appointment today at one of our Brisbane clinics and start your journey to stronger, more resilient knees.

Interested in ACL specific rehab? Check our guide on return to sport after ACL injury

Until next time, Praxis What You Preach!

📍 Clinics in Teneriffe, Buranda, and Carseldine

💪 Trusted by athletes. Backed by evidence. Here for everyone.

References

Bove, A. M., Smith, K. J., Bise, C. G., et al. (2018). Exercise, manual therapy, and booster sessions in knee osteoarthritis: cost-effectiveness analysis from a multicenter randomized controlled trial. Physical Therapy, 98(1), 16–27.
Fransen, M., McConnell, S., Harmer, A. R., Van der Esch, M., Simic, M., & Bennell, K. L. (2015). Exercise for osteoarthritis of the knee: a Cochrane systematic review. British Journal of Sports Medicine, 49(24), 1554–1557.
Bennell, K. L., Dobson, F., & Hinman, R. S. (2014). Exercise in osteoarthritis: moving from prescription to adherence. Best Practice & Research Clinical Rheumatology, 28(1), 93–117.
Naja, M., Fernandez De Grado, G., Favreau, H., et al. (2021). Comparative effectiveness of non-surgical interventions in the treatment of patients with knee osteoarthritis: a PRISMA-compliant systematic review and network meta-analysis. Medicine, 100(49),
Xing, D., Wang, B., Liu, Q., et al. (2016). Intra-articular hyaluronic acid in treating knee osteoarthritis: a PRISMA-compliant systematic review of overlapping meta-analyses. Scientific Reports, 6, 32790.

Knee Osteoarthritis: Is ‘Bone on Bone’ a painful life sentence?

by Stephen Timms | May 16, 2023 | Knee, Osteoarthritis, Pain, Surgery

Knee Osteoarthritis is a common ailment responsible for pain, loss of function and reduced quality of life
Rates of knee OA are set to increase
Whilst there is no cure, exercise therapy under the guidance of a physiotherapist is considered a front line treatment to help reduce the severity of symptoms
There are options before a knee replacement

Do your knees go crackle and pop? Pain with walking, stairs or getting out of a chair? Stiffness and pain first thing in the morning or after a long car ride? These are signs that you may be living with the early or even advanced symptoms of knee osteoarthritis (OA). Don’t fear though – there is plenty that can be done immediately.

What is “OA”?

Osteoarthritis (OA) is an increasingly prevalent source of musculoskeletal pain and dysfunction. OA is a disease of the joint – including cartilage, bone, capsule and other associated tissues. This disease process can cause chronic pain, reduced physical function and diminished quality of life. The ageing population and increased global prevalence of obesity are anticipated to dramatically increase the impacts of knee OA and its associated impairments [1]. Although osteoarthritis can affect any joint, OA is knee is one of the most common complaints.

Presentation

It most commonly presents in people over the age of 50, and is often described as being painful, stiff and occasionally swollen. In terms of a tissue level, knee OA describes the gradual deterioration of the supportive cartilage within the knee joint. As the cartilage wears away with time, the protective joint space between the bones decreases. With a reduced cartilage lining to protect and support the spacing of the knee joint, the Femur and Tibia (knee bones) are increasingly less likely to dissipate forces through the joint . With time, it should be expected that bone spurs (osteophytes) may form in and around the joint as the bones react to repetitive contact with each other.

Management

The management of knee OA largely consists of exercises addressing strength, range of motion, quality of movement, emphasizing joint control, pain reduction and weight management.

Strength Training

Strength training should be the cornerstone of addressing knee OA, particularly the early signs. Strengthening the muscles around the knee joint, such as the quadriceps, hamstrings, and glutes provide better support to the knee, reducing stress on the joint and helping to alleviate pain and discomfort. Movement associated with exercise has an added benefit – It increases joint lubrication. Loading of the joint stimulates the production and distribution of synovial fluid within the joint. This fluid acts as a lubricant, reducing friction and providing cushioning to the joint surfaces. Improved lubrication can help alleviate pain during movement.

Range of motion

Knee osteoarthritis often leads to stiffness and limited range of motion in the joint. Physiotherapy can include specific exercises, manual therapy and stretches to improve joint flexibility, helping to restore a more normal range of motion and enhancing mobility. The greater the restoration of range, the better the knee feels.

Pain reduction

Both strength training and physiotherapy can help reduce pain associated with knee OA. As mentioned, stronger muscles provide better support to the joint, relieving pressure and reducing pain during movement. Physiotherapy may provide education of aggravating and easing factors (eg. hot / cold packs, hydrotherapy) as well as liaise with your GP for adequate analgesic medications.

Lifestyle modifications

Adopting a healthy lifestyle can play a pivotal role in managing knee osteoarthritis. Maintaining a healthy weight reduces the stress on the knee joints. Regular low-impact exercises such as swimming, cycling and reformer pilates help improve strength, flexibility, and overall joint health. A balanced diet rich in fruits, vegetables, whole grains, and lean proteins can promote weight loss and provide essential nutrients for joint health. Quitting smoking and minimizing alcohol consumption are also beneficial.

Improved weight management

Regular exercise can assist in weight management, which is crucial for individuals with knee osteoarthritis. Excess weight puts additional strain on the knee joint, contributing to pain and progression of the condition. By maintaining a healthy weight, exercise helps to reduce the load on the joint and alleviate pain.

Surgical Interventions

When conservative measures fail to provide relief, surgical interventions may be necessary. Procedures such as arthroscopy, osteotomy, and joint replacement surgery can help repair damaged tissues, realign the joint, or replace the damaged joint with a prosthetic. These surgeries can significantly improve mobility and reduce pain, allowing individuals to resume their daily activities. Physiotherapy can aid in preparing you for the surgery, as well as rebuild your “new” knee after a knee replacement has been completed.

In conclusion, while knee osteoarthritis can be challenging, it is not a condition that should hinder individuals from leading fulfilling lives. By implementing lifestyle modifications, exploring various treatment options, and working closely with your physiotherapist, individuals can effectively manage their symptoms, alleviate pain, and enjoy an active lifestyle with a sense of well-being. If conservative options fail, there are surgical interventions that can be investigated. If you are wanting to look after your knees, or already suffering from knee pain, chat to our knowledgeable Praxis Physios to discuss your treatment options at any stage of OA’s progression.

Until next time,

Praxis what you Preach

FACT OR FICTION FRIDAY || Knee Pain and Scans

by Stephen Timms | Dec 6, 2019 | Knee, Osteoarthritis, Pain

Answer: FICTION 🙊

“Osteoarthritis” is a common term that gets used by our patients as an explanation of their knee pain. But is this always the case 🤔?

🔍In a recent systematic review estimates of osteoarthritis feature prevalence on MRI among asymptomatic uninjured knees were up to 14% in adults < 40 years, and up to 43% in adults > 40 years!

Whilst features on MRI imaging such as cartilage defects, meniscal tears and osteophyte lesions can potentially play a role if you have pain, this should always be interpreted in the context of your clinical presentation by a health care professional as these changes can be normal in an asymptomatic population – just like grey hair as we age 👴👵!

If you have knee pain and have resigned yourself to a ‘life sentence’, come and have a chat to one of our physios to ensure you aren’t robbing yourself of a full functioning future 🕺🏃🏌️🏄🏋️🏊🚴🏂🎾! Call 07 3102 3337 or book online

#kneeoa #praxisphysio #factorfictionfriday #preventprepareperform #kneepain #kneeosteoarthritis #mri #fullfunctionfuture

Reference:

Culvenor AG, Øiestad BE, Hart HF, et al Prevalence of knee osteoarthritis features on magnetic resonance imaging in asymptomatic uninjured adults: a systematic review and meta-analysis British Journal of Sports Medicine 2019;53:1268-1278.

Is running bad for your knees?

by Stephen Timms | Nov 28, 2018 | Knee, Pain, Return to Sport, Running Injuries, Sports Injury

Running. Probably one of the most maligned exercises when it comes to knees and overuse injuries. The thought that running ‘wears’ out your knees and causes osteoarthritis (a chronic disease often associated with joint pain and stiffness, reduced mobility and reduced quality of life) is one of the most common comments I hear as a physiotherapist – typically by non-runners. But do we have it right? Is running actually bad for your knees?

I recently attended the University of Queensland Sports Masters presentation day. The keynote speaker was a Dr Jean-Francois Esculier, a Postdoctoral Fellow at the University of British Columbia on the topics of running and knee osteoarthritis. Originally trained as a physiotherapist, Dr Esculier gave us an excellent overview of his latest research his take on whether or not running is detrimental to knee health.

First, there was an acknowledgement that echoed the sentiments in the opening paragraph. A study in which Dr Esculier undertook attempted to ascertain the perception about running and the knee joint health among the public and health care professionals. The results suggested that many non-runners perceived running as detrimental to knee health. Understandably, with no clear guidelines, health care professionals displayed high rates of uncertainty regarding running as a risk factor to develop knee osteoarthritis (KOA), and about the appropriateness of running with pre-existing KOA [1].

Mid Potion Achilles Tendinopathy Location

Osteoarthritis often results in cartilage loss, in bone rubbing on bone, which can cause inflammation, pain, stiffness, reduced mobility and reduced quality of life [7].

The paucity of clear training parameters for runners also has a knock on effect with a staggering 75% of runners report being injured whilst running each year with the knee being the most common region of complaint [2]. From my experience as a clinician, the factor that is most often associated with an injury are training errors. Too much too quick. Boom bust. No physical preparation. No listening to your body or allowing adequate recovery time. No periodisation or plan – just run and run.

The remainder of the talk that covered many interesting relatable topics (that will likely be areas for future blogs) but the information that most interested me and should answer the question as to whether running is bad for your knees was the following:

Cartilage change with running:

With the improvements in MRI scanning, more papers are looking at the cartilage volume of knees immediately after a long distance run. According to current evidence [3], cartilage may exhibit short-term decreases in thickness, volume and cartilage water flow (T2 relaxation time) secondary to temporary loss of fluid following repeated compressions associated with running. However, cartilage size tends to return to baseline within hours suggesting that cartilage may well tolerate mechanical loading sustained during running and adapt to repeated exposure.

The response of cartilage to longitudinal load is exactly what Van Ginckel et al [4] investigated. After providing a 10 week “Start To Run” program to novice runners, the reserachers looked at the glycosaminoglycan (GAG) content before and after the running intervention and compared to sedentary controls, who did no running. For those of you (like me) who had no idea what glycosaminoglycan / GAG content is, it is essentially a surrogate marker for cartilage quality (specifically, GAG is an important structural matrix compound in regulating the cartilage tissue’s endosmotic swelling pressure and thus, the tissue’s compressive strength).

The results suggested that a gradually built up running scheme appears to positively effect GAG content, and thus cartilage quality. In fact, running appears to be a chondroprotective effect on the knee when compared to a sedentary lifestyle in a female asymptomatic subjects. The author’s went onto say that running schemes like this might be considered a valuable tool in osteoarthritis prevention strategies [4].

Osteoarthritis (OA) rates in competitive vs recreational vs non-runners:

The body’s ability to adapt to considered and appropriate load is likely explanation as to why when we look at the rates of lower limb osteoarthritis (OA) across the population, we find some interesting results. A systematic review [5] of the literature looked at the association of recreational and competitive running with hip and knee OA. The overall prevalence of hip and knee OA was 13.3% in competitive runners, 3.5% in recreational runners, and 10.2% in controls. Exposure to running of less than 15 years was associated with a lower association with hip and/or knee OA compared with non-runners.

Recreational runners had a lower occurrence of OA compared with competitive runners and controls. These results indicated that a more sedentary lifestyle or long exposure to high-volume and/or high-intensity running are both associated with hip and/or knee OA. However, it was not possible to determine whether these associations were causative or confounded by other risk factors, such as previous injury [5].

SUMMARY

Running appears not to cause osteoarthritis in your knees unless you are a competitive long distance runner. Even then, you are only slightly above the average for non-runners but enjoy the myriad of other benefits that exercise brings. Further, increased mileage in recreational runners appears to be actually protective for your knees and reduces your risk of needing a knee replacement [6]. Caution however must be taken to monitor detailed training parameters such as frequency, speed and distance, so that an optimal dosage for knee joint health tailored to the individual patients with knee osteoarthritis.

So the next time someone tells you that you shouldn’t be running because you’ll get OA, or if your health expert recommends to stop all activity because you have been diagnosed with mild / moderate osteoarthritis of the knee, we can help! As always, we at Praxis are more than happy to help you navigate your way back to performing – whatever that may look like! Give us a call (07) 3102 3337 or book online www.praxisphysio.com.au today

Until next time, Praxis What You Preach

There is no need to accept knee pain as ‘normal’. Call us now on (07) 3102 3337 or book online to have one of our physios develop a plan to reduce your pain and restore your function!

To read more about how running can help your knees (that’s right – running!) check out our related posts on running written by our published principal physio, Stephen.

Team Praxis,

PREVENT | PREPARE | PERFORM