Knee Replacement Recovery at Home: What the First Six Weeks Look Like

The hospital stay after a knee replacement is often short these days, sometimes a single night, and some people go home the same day. Then you're standing in your own front hall with a walker, a bag of discharge papers and a new knee, wondering what happens next. This post is about knee replacement recovery at home: what the first six weeks usually look like, and where people tend to get stuck.

One ground rule: every surgeon has their own protocol, and yours always comes first. This is the general picture, not a replacement for your discharge sheet.

Week one: swelling, ice and setting up the house

Your knee will be swollen. Probably more than you expected, and probably for longer. Swelling in the knee and even the calf can hang around for three months or more, and the knee can feel warm for a few months too. That's normal healing, not a sign that something went wrong (the red flags further down are the exceptions).

What usually helps, if your surgical team agrees:

• Ice in short sessions. Wrap the ice pack or bag of frozen peas in a damp towel and keep it on for about 10 to 20 minutes, then give the skin a break. Follow any cold therapy instructions the hospital gave you.
• Elevation that keeps the knee straight. Support the whole leg under the calf and heel, ideally with your foot above the level of your heart. Not a pillow under the knee (more on that below).
• Little and often. Short walks around the house and your exercises spread through the day, rather than one heroic session followed by a swollen evening on the couch.

It's also the week to clear the rugs off the route to the bathroom and find a firm chair with arms you can push up from. The bottom shelf can wait.

Bending and straightening: the two goals that matter most

Straightening

Getting the knee fully straight is the goal people tend to forget, and it matters just as much as bending. A knee that stays slightly bent makes walking feel like you're always going up a small hill. This is why the pillow under the knee is such a common trap. It feels lovely, and it lets the knee get comfortable in a bent position. Resting with your heel supported on a rolled towel, so the knee can relax straight, does the opposite. You'll find that one and a few others on the knee replacement exercises page.

Bending

Many surgical teams aim for a fully straight knee and around 90 degrees of bend within the first couple of weeks, then work toward roughly 110 to 120 degrees over the following weeks and months. For scale, 90 degrees is roughly a knee bent to sit in a chair; a bit more makes stairs and low cars much easier.

Those are typical targets, not a pass or fail test. How your knee moved before surgery affects where you end up, and your surgeon and physiotherapist will set your own goals. The early weeks do count, though. Scar tissue tightens over the first few months, so the movement you work on now is a lot easier to get than movement you try to win back later.

Stairs in an Oakville split-level (or any house)

Hospital physio usually checks that you can manage a few steps before you go home. Your own stairs are a different animal: steeper, a railing on one side only, or a landing that turns halfway up (Oakville split-levels have opinions about this).

The rule most people learn is up with the good, down with the bad:

1. Going up: step up with your non-operated leg first, then bring the operated leg and your cane or crutch up to the same step.
2. Going down: put your cane or crutch and the operated leg down first, then follow with the good leg.
3. One step at a time, both feet on each step, holding the rail.

No rail, or a rail on the wrong side? Sort that out with your physiotherapist rather than improvising.

From walker to cane, at your team's pace

Most people leave hospital with a walker or crutches. Moving to a cane, then to nothing, depends on your surgeon's advice, your strength and your balance, not the calendar. A common sign you're ready is walking without a limp. Many people drop the aid indoors before they're ready to go without it on uneven sidewalks or a slippery fall morning in Glen Abbey.

If you already have a walker or cane at home, I can work with you on using it well: posture, step length, turning corners and getting through doorways. If you need a new walker or rollator chosen and fitted, that assessment isn't something I do in your home, but I'm happy to talk through your options on the phone.

Sleep (or the lack of it)

Poor sleep is a very common complaint in the first few weeks. The knee aches at night and lying on your back for weeks is nobody's idea of a holiday. A few things people find helpful:

• Timing pain medication as prescribed so it isn't wearing off at 3 am
• Icing and elevating in the evening before bed
• Lying on your back with the leg straight, or on your side with a pillow between your knees, if your surgeon allows it

Sleep usually improves as swelling settles. If pain keeps you up most nights, tell your surgeon's team.

Driving: your surgeon decides

This question often comes up before I've taken my coat off. Many people return to driving somewhere around four to six weeks, but it depends on which knee, whether you're still taking medication that makes you drowsy, and whether you can brake hard in an emergency. A left knee in an automatic car may be sooner than a right one. Your surgeon gives the final word, and checking with your insurer is sensible too. Until then, the QEW will have to manage without you.

Knee replacement recovery at home: why the exercises matter

The operation gives you a new joint. The exercises get your muscles working with it, especially the thigh muscles, which tend to switch off a bit after knee surgery and need repetition to wake back up. That's why most hospital sheets ask for exercises several times a day, not just on physio day.

Seeing a physio in your own home makes this easier in practical ways. There's no car ride with a swollen knee, and the exercises can be built around your actual stairs, your kitchen chair and your bed height. On a home visit I check your bending and straightening, watch how you walk and climb your stairs, adjust the exercises to your surgeon's protocol, and use hands-on treatment where it helps. You can read more about how that works on the knee replacement physiotherapy at home page, or about in-home physiotherapy in Oakville in general.

What six weeks is, and isn't

Six weeks is a milestone, not a finish line. By then many people are walking around the house without an aid and getting a little impatient. But swelling often takes three months or more to settle, and many people keep improving for a year or more. A busy day can be followed by a sore one. That's a normal pattern, not a sign the knee isn't healing. Keep at the exercises, and save the walk along the Bronte waterfront for when your team says you're ready.

If you're just home from surgery, or getting ready for one, you can book a home visit or start with the free 15-minute phone call. It's a chance to ask questions, tell me where you're at, and figure out whether physiotherapy at home fits what your surgical team has planned.

Common questions

How long do you need physiotherapy after a knee replacement?

It varies. Many people have physiotherapy for several weeks to a few months after surgery, and keep doing their home exercises for longer than that. Recovery often continues for a year or more. Your surgeon and physiotherapist decide how long and how often based on your progress.

When can I climb stairs after a knee replacement?

Many people practise a few steps with the hospital physiotherapist before going home. At first, go one step at a time with a rail: step up with your good leg, and down with your operated leg and your cane or crutch. Follow your surgical team's advice on stairs.

How much should my knee bend 6 weeks after a knee replacement?

Many surgical teams aim for about 90 degrees of bend within the first couple of weeks and keep working toward roughly 110 to 120 degrees over the following months, so at six weeks many people are somewhere along that path. Getting the knee fully straight matters just as much. Your surgeon and physiotherapist set your own targets.

Is physiotherapy after a knee replacement covered in Ontario?

It can be. Anyone with an Ontario health card who had an overnight hospital stay or day surgery in the last 12 months for a condition that needs physio can get OHIP-funded physiotherapy at a government-funded clinic. Some hospitals also arrange follow-up physio as part of your surgery, so ask before you're discharged. For publicly funded physio at home, Ontario Health atHome decides who qualifies. Many extended health plans include physiotherapy too, so check your plan.

When can I drive after a knee replacement?

Many people return to driving around four to six weeks after surgery, but your surgeon decides. You need to be off medication that makes you drowsy and able to brake hard in an emergency. A left knee in an automatic car may be sooner than a right knee.