Week-by-Week Knee Replacement Rehab: What to Expect in the First 6 Weeks
Recovering from a total knee replacement is a structured process, but it rarely feels linear when you’re going through it. Some days bring big wins, others feel frustratingly slow. There can be a lot of pain and uncertainty in the first few weeks post your surgery. Knowing what’s typical in the first six weeks can help you stay focused on progress and I hope to give you a better understanding of what to expect.
Week 1: The Immediate Post-Op Phase
Pain & Swelling:Pain is at its peak this week, often requiring prescribed medication. Swelling can be significant and extends beyond the knee into the calf and sometimes the foot. This is all very normal! Do not underestimate the pain - pain can be quite severe following this surgery.
Mobility & Gait Aids:You’ll likely be using a walker. Walking can begin the day of surgery, it will be challenging and of short duration. Some may start with a cane, others with no aid - don’t rush off your mobility aid regardless where you start! Make sure a physiotherapist reviews with you what aid you should be using at this important early phase.
Physiotherapy:You will see a physiotherapist on day 1-2 in the hospital and then be sent home if cleared. You will begin outpatient physiotherapy (outside of the hospital) within 3-7 days following your surgery. The earlier the better! Early physio focuses on:
Gentle range of motion (bending and straightening)
Activating the quadriceps
Safe transfers (bed, chair, bathroom)
Exercises May Include (see link - Exercises day 1 post TKR) :
Quad sets
Heel slides
Self Knee Extension Mobilizations
Ankle Pumps (Not in Video)
Other Priorities:
Ice frequently (15–20 minutes at a time) - this will help with pain management
Elevate the leg to manage swelling
Keep the dressing clean and dry
Review pain medications with your doctor
Weeks 1-6: Managing Pain, Swelling and Regaining Independence
Pain & Swelling
Pain is typically highest in the first 1–2 weeks following surgery. After that, it gradually becomes more manageable, though it doesn’t disappear entirely and it is hard to predict when pain may completely dissipate. Your pain may shift at this time and become more activity-related (for example, after longer walks or physio sessions your pain may increase). Do not underestimate the pain that comes with this surgery.
Swelling is one of the most persistent symptoms across the entire 6-week period. It often extends into the lower leg and ankle and can fluctuate day-to-day depending on your activity level. Even by week 6, it’s common to still have noticeable swelling, especially later in the day. In my experience swelling can be present 6-12 months following surgery, although it will gradually decrease with time.
What helps:
Regular icing (15–20 minutes, 3-6x/day) - pain control, #1 pain control along with Doctor prescribed medications.
Elevation (leg above heart level when possible) - swelling management
Pacing activity (avoiding big spikes in load) - swelling management and pain control
Mobility & Gait Aids
Most people may still be using a walker at this point. As strength and confidence improve, they transition to crutches or a cane, and eventually begin walking short distances unaided.
By the end of 6 weeks:
Many are walking independently indoors
A cane may still be used outdoors for longer distances
Walking quality (not just distance) becomes the main focus
It’s normal to have a limp early on. Retraining a smooth, symmetrical walking pattern is a key part of recovery.
Please also remember everyone is different. There is no timelines to be using your walker or cane, remove these aids as appropriate with the help of your Physiotherapist.
Wound Healing & Incision Care
Your surgical dressing is typically removed and staples or sutures come out around the 2-week mark (depending on your surgeon’s protocol).
After this:
The incision continues to heal and mature
You may begin gentle scar care once cleared by your healthcare provider
Watch for signs of infection (increased redness, warmth, discharge)
DO NOT put any topicals on your scar unless cleared by a healthcare provider as putting topicals on in the early stages of healing can increase your risk of infection, this includes polysporin.
Physiotherapy & Manual Therapy
Physiotherapy starts almost immediately after surgery and continues throughout the 6 weeks and beyond, as mentioned above. You should see your physiotherapist 1-2x/week during the first 6 weeks following surgery.
Early focus:
Regaining knee range of motion (bend and straighten)
Activating key muscles (especially quadriceps)
Safe movement (getting in/out of bed, walking)
Later focus:
Strengthening the leg
Improving walking mechanics
Building confidence with functional tasks (stairs, sit-to-stand)
Manual Therapy: This involves hands-on techniques performed by your physiotherapist to support improvements in knee bending, straightening, and overall movement. It can also help reduce stiffness and improve comfort as you progress. Manual therapy may be used along the way to:
Improve joint mobility
Reduce stiffness
Address surrounding muscle tightness
Important Note: Some discomfort during manual therapy is normal, especially early on. However, it should never feel overwhelming or debilitating. If it does, communicate this with your physiotherapist so your treatment can be modified.
Range of Motion Goals
While timelines vary, general milestones often look like:
90° bend (Knee flexion) by 2–3 weeks
100–110° bend by 4–6 weeks
Full knee straightening (extension 0° ) as early as possible
Getting the knee fully straight is just as important—if not more—than bending it.
Exercises & Activity ProgressionYour exercise program will gradually progress over the first 6 weeks, moving from gentle activation to more functional strengthening and balance work.
Early Phase (Weeks 1):Focus is on circulation, reducing stiffness, restoring range of motion, and activating key muscles. See the exercises mentioned above and link here —> Exercises Day 1 Post TKR
Mid Phase (Weeks 2-6) Exercises Week 2-6 Post TKR: As pain settles you can push your mobility further. Focus remains as week 1 on circulation, reducing stiffness, restoring range of mooring and activating key muscles but in a more progressive fashion. Exercises may include:
Knee Flexion on a step
Knee flexion at edge of bed
Long Arc Quads
Tandem Balance
Stationary bike
Later Phase (Weeks 5–6):Exercises shift toward function, balance, and independence in daily activities:
Sit-to-stand
Functional strengthening (e.g., stairs, longer walks etc)
Consistency matters more than intensity. Doing the right exercises regularly—without overdoing it—is what will drive your progress.
Ice, Elevation & Recovery Strategies
Recovery isn’t just about exercise. Managing inflammation, pain and swelling is just as important.
Across all 6 weeks:
Ice after exercises or longer walks, this can really help with pain control post surgery.
Elevate regularly to reduce swelling
Build rest into your day - take breaks! Remember this is a marathon not a sprint. Recovery can sometimes take up to 1 year.
If swelling spikes, it’s usually a sign you’ve done a bit too much.
What Surprises Most People
Swelling lasts longer than expected
Progress isn’t perfectly steady
Stiffness can feel worse than pain at times
Energy levels can be lower than usual
All of this is normal—and part of the process.
Download Your Daily Mobility Routine + Exercise Videos
To make rehab easier to follow, you can download a simple daily mobility routine that outlines a simple daily mobility routine which can be completed during the first 6 weeks post surgery and beyond:
👉 Download your daily knee replacement mobility routine here:Free 10 Minute Daily Mobility Routine
You can also follow my guided exercise videos based on your stage of recovery:
Week 1 Post TKR - Exercises Day 1 Post TKR
Week 2-6 Post TKR - Exercises Week 2-6 Post TKR:
Tip: Choose videos created by licensed physiotherapists or reputable clinics for safe guidance.
Final Thoughts
The first six weeks after knee replacement are about building a strong foundation—restoring movement, improving strength, and getting back to everyday activities.
You don’t need to rush the process. Focus on steady, consistent progress, manage swelling, and keep moving forward—even on the slower days.
- Liam
Disclaimer:
This content is for educational purposes only and does not replace medical advice. Always follow the guidance of your healthcare provider and exercise within your comfort level.
