Going Back to Work After a Knee Replacement
How long people are usually off work after a knee replacement, by type of job, why working from home is not a lighter option, how to pace a return, and what to ask an employer for.
Most people underestimate this one, and almost none regret taking longer.
The question at every review is “when can I go back?”, and it deserves a better answer than a number of weeks. The honest version is that it depends on what the job asks of the knee, how tired you still are, and how the return is staged.
How long off: it depends on the job
These are the usual ranges. They are not rules, and your own are set at your review.
Published studies put the average time to return to work after a total knee replacement at roughly 8 to 13 weeks across all kinds of job, with a wide spread. A 2023 meta-analysis of 44 studies found a mean of 12.9 weeks, ranging from 5 to 42, and about 90% back at work by a year (Pasqualini 2023). Reviews of working-age patients report averages of 8 to 12 weeks and 7.7 to 16.6 weeks, and the most consistent finding is that more physical work means a slower return (Tilbury 2014; Van Leemput 2021).
| The job | Usually back |
|---|---|
| Desk or screen work | 4 to 8 weeks, part days first |
| On your feet most of the day | 6 to 12 weeks, in stages |
| Heavy, repetitive or kneeling | 3 months or more, modified duties first |
| Driving or machinery | After driving is cleared |
“On your feet” covers retail, teaching, hospitality and nursing. “Heavy” covers trades, farming, warehouse work and ladders. Driving is usually cleared around six weeks, and often later for heavy vehicles.
Two things move those ranges more than anything else. A job with a lot of kneeling or crouching is the one a knee replacement tolerates least, which is why it is worth raising before surgery. A long commute counts as part of the job: it is sitting, parking and stairs on both ends.
If your job is at the physical end and you cannot be off for three months, say so before the operation. Staged returns, shorter days and a different task for a few weeks are all easier to arrange in advance.
Working from home is not a lighter version
The most common regret is going back early because the job is “only at a laptop”. It is worth being straightforward about why.
- In the first two weeks you are on strong pain relief, and concentration and judgement are blunted. That is a poor state for important decisions or anything with a signature on it.
- You are very tired, and broken sleep makes it worse. The fatigue after a knee replacement is out of proportion to what you did that day.
- The knee wants to be elevated and iced several times a day, which a normal working day does not allow.
That is not an argument against working at all. Plenty of people do short, flexible sessions from a recliner in the second or third week and are glad of the contact. It is an argument against a normal day, and against agreeing a date with an employer before you know how you will feel.
What a sensible return looks like
Go back in parts. Half days first, then longer ones, then the full week. Doing it the other way round, a full week at once, is how people end up with a swollen knee and a lost week.
Build the knee into the day.
- Get up and walk for a couple of minutes every half hour or so
- Keep a footrest or a second chair for the leg, so the knee does not stay bent for hours
- Ice at lunch, and again when you get home
- Park close, and take the lift rather than the stairs for a few weeks
- Keep the physiotherapy appointments in the diary, and protect them from the job
Expect the afternoons to be worse. Swelling and tiredness build through the day. Doing the demanding work in the morning is a small adjustment that helps more than it sounds.
Treat a swollen knee after a workday as information about pacing. It is not damage. Ease the next day, keep the exercises going and build again. The recovery page explains why the weeks around six to eight feel like a step backwards, and it is often exactly when work resumes.
Paperwork and conversations
Certificates. Ask the hospital or the rooms for a certificate covering the dates you will be off. A medical certificate says you cannot work. It does not say what you can do, and that is the part an employer needs.
Restrictions in writing. A short note listing practical limits, such as no ladders, no kneeling, a maximum time standing, seated breaks and shorter days, is what turns a vague “light duties” into a plan. Ask for it at your review rather than at the end.
Leave and income. Plan for the longer end of the range. If the shorter one turns out to be enough, you have a pleasant surprise. If you are self-employed or on casual rates, work out what three months looks like before you book a date, not after.
Tell your employer early, and tell them it is staged. “I will be back part-time at about six weeks, and full-time when the knee allows” is a very different message from a single return date.
When it is not working
Going back too soon rarely causes damage. It causes a cost: a knee that is more swollen, stiffer, slower to bend, and a recovery that takes longer than it needed to.
Things that mean you should slow down for a week:
- Swelling that does not settle overnight
- Bend or straightening that is going backwards
- Pain that rises through the week, rather than fluctuating
- Needing more pain relief than you were taking last week
Fever, a wound that is red or discharging, or a painful and swollen calf need the same-day call set out on the warning signs page.
Before surgery, not after
If you are planning a knee replacement and work is the constraint, the most useful thing is to start the conversation early. The practical side, including time off, is covered in preparing for a knee replacement, and the first two weeks at home sets out what the early fortnight actually asks of you.
If you would like to talk it through, phone the rooms on (08) 6332 6365 or use the contact page.
Studies cited
All are indexed in PubMed.
- Pasqualini I et al. Return to sports and return to work after total knee arthroplasty: a systematic review and meta-analysis. JBJS Rev 2023. doi:10.2106/JBJS.RVW.22.00250
- Tilbury C et al. Return to work after total hip and knee arthroplasty: a systematic review. Rheumatology (Oxford) 2014. doi:10.1093/rheumatology/ket389
- Van Leemput D et al. Return to work after primary total knee arthroplasty under the age of 65 years: a systematic review. J Knee Surg 2021. doi:10.1055/s-0040-1722626
Next: Sport and hobbies after a knee replacement — or flying after a knee replacement.
How long off work after a knee replacement?+
It depends mostly on the job. Desk-based work is commonly resumed in stages, with short sessions from home sometimes in the second or third week and a full working week by about four to eight weeks. A job on your feet most of the day usually takes six to twelve weeks, built up in stages. Heavy manual work, repeated kneeling, ladders or long hours of walking commonly take three months or more, often with modified duties first. These are usual ranges, and your own are set at your review.
Can I work from home earlier than I could go into the office?+
Sometimes, but it is not a lighter version of the same job, and it is the commonest place people go back too soon. In the first two weeks you are tired, on strong pain relief and finding it hard to concentrate. Reasonable aims are short, flexible sessions with the leg elevated, not a normal day. Most people find a full working week at the desk takes several more weeks than they expected.
Why am I so tired when I go back to work?+
Fatigue after major surgery commonly lasts well beyond the wound healing, often six to twelve weeks, and it is worse with broken sleep and the first weeks of reducing pain medication. A workday also asks more of the knee than a recovery day does, with sitting, commuting and stairs, so swelling and tiredness arrive together in the afternoon. Part days and a protected lunch break help more than willpower.
Can I go back to a physical job after a knee replacement?+
Often yes, in stages. The things to settle early are kneeling, crouching, ladders, uneven ground and heavy lifting, because those are the demands a knee replacement tolerates least well. If your job depends on one of them, raise it before surgery so it can be discussed specifically, and plan on a graded return with modified duties rather than a single start date.
Who provides the medical certificate and work restrictions?+
Ask at the hospital or at your first review. A certificate covers the dates you are off, and a short note listing what you can and cannot do, such as no ladders, no kneeling, seated breaks and a maximum standing time, is what lets an employer arrange modified duties. It is easier to have the restrictions in writing than to negotiate them from memory.
What should I ask my employer for when I go back?+
A graded return, with part days at first. Somewhere to put the leg up, a second chair or footrest works well. Permission to stand and walk briefly every half hour or so. Parking close to the door for a few weeks. And a relaxed expectation about the first month, because stamina returns in the second half of it, not the first.