Knee Replacement Rehab Series · Part 1
Grace is 68 and has not knelt in her garden for three years. A retired primary school teacher, she has lived with osteoarthritis in her right knee for almost a decade. At first it was stiffness on cold mornings. Then it was the stairs. Now she walks with a stick, sleeps badly, and watches her grandchildren play from the bench rather than the grass. Last month, her surgeon put her on the waiting list for a total knee replacement.
Grace is not a real person. She is a composite, built from the many people physiotherapists meet at every stage of this journey. Over the next eight weeks, she will be our guide.
Why follow one story?
Knee replacement is common, and often very successful. In the UK alone, the National Joint Registry has now recorded more than 4.5 million hip, knee and other joint replacement procedures since 2003 (National Joint Registry, 2025). For most people, the operation brings real relief from pain and a return to activities they had given up.
But success is not guaranteed. About one in five people are not satisfied with their new knee (Bourne et al., 2010), and roughly one in eight still have chronic pain a year after surgery (Cheng et al., 2025). These are not rare complications. They are part of everyday practice.
Research on knee replacement is usually split into separate topics: prehabilitation in one paper, stiffness in another, persistent pain in a third. Patients do not experience their recovery that way. For Grace, it is one long story, and what happens in one chapter shapes the next. Her worries before surgery affect how she copes with pain afterwards. How well she moves in the first weeks affects how strong she becomes. Following one person helps us see those connections.
Where rehabilitation fits
Rehabilitation runs through every stage of the journey, not just the weeks after surgery. Physiotherapists may meet someone like Grace before she is even referred, help her prepare for the operation, get her moving on the ward, guide her through months of strengthening, and support her if pain lingers. Few other professions see the whole arc.
That makes rehabilitation the focus of this series. Each post asks the same question: at this point in Grace’s journey, what does the evidence say, and what can we do in clinic?
Grace’s journey in four acts
The series follows Grace’s recovery in four stages.
Act 1: Before surgery. Has Grace had a fair trial of exercise and education? What does she expect from the operation, and is she at higher risk of a difficult recovery? If she goes ahead, how do we prepare her?
Act 2: The early weeks. Grace leaves hospital within days of her operation. We look at early mobilisation, pain and swelling, and the struggle that worries patients most in the first weeks: getting the knee to bend.
Act 3: Rebuilding. Her wound has healed, but her thigh muscles are weak and her walking is not yet normal. This act covers strength training, walking and balance, where rehabilitation should take place, and how to measure progress in ways that matter to Grace.
Act 4: The long road. What if Grace’s pain does not settle? And if it does, how does she get back to the garden, the stairs and her grandchildren? The series ends one year after her operation.
How the series works
There will be two posts a week, every Friday and Sunday. Each post takes one stage of Grace’s journey. It opens with a scene from her recovery, looks closely at the research, and ends with practical points for clinic. Every post includes full references for anyone who wants to read further.
One question will follow us throughout: why do some people still hurt after a technically successful operation? We will look at who is most at risk before Grace’s surgery, and return to it near the end of her journey. Rehabilitation is one of the places where we can respond.
A note on the evidence
Grace’s story is fictional, but the evidence is not. Every post draws on systematic reviews, trials and cohort studies, with references in APA style so you can check them yourself. Where the research is uncertain, I will say so. Where clinical experience and evidence pull in different directions, I will try to be honest about that too.
Join the conversation
If you are a physiotherapist, a researcher, or someone who has had a knee replacement yourself, I would love to hear from you. What did you find hardest about recovery? What do you wish someone had told you, or your patients, earlier? Leave a comment, and your experiences may shape the posts to come.
On Sunday, we begin Act 1 by asking what exercise and education can offer Grace before she even reaches the operating theatre.
References
Bourne, R. B., Chesworth, B. M., Davis, A. M., Mahomed, N. N., & Charron, K. D. J. (2010). Patient satisfaction after total knee arthroplasty: Who is satisfied and who is not? Clinical Orthopaedics and Related Research, 468(1), 57–63. https://doi.org/10.1007/s11999-009-1119-9
Cheng, H.-Y., Beswick, A. D., Bertram, W., Siddiqui, M. A., Gooberman-Hill, R., Whitehouse, M. R., & Wylde, V. (2025). What proportion of people have long-term pain after total hip or knee replacement? An update of a systematic review and meta-analysis. BMJ Open, 15(5), e088975. https://doi.org/10.1136/bmjopen-2024-088975
National Joint Registry. (2025). National Joint Registry 22nd annual report. https://reports.njrcentre.org.uk/
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