Exercises After Knee Replacement in First 4 Weeks

After total knee arthroplasty, gentle movement in the first few weeks helps reduce stiffness and supports basic function. Starting the right exercises after knee replacement at home can aid pain management after TKR and prevent excessive swelling.

These early recovery exercises after knee surgery focus on simple actions you can do in bed or while seated. They target the quadriceps, improve blood flow, and gently restore knee bending. Recovery varies from person to person.

Why Early Movement Matters After Knee Replacement

Gentle activity soon after surgery helps keep the joint from becoming too stiff. It supports blood circulation, which can limit swelling around the knee.

In the first four to six weeks, the focus is on preventing stiffness after knee replacement. Small, regular movements encourage the new joint to move smoothly.

General Safety Rules Before You Begin

Check with your surgical team before starting any exercises after knee replacement. Stop immediately if you notice increased pain, redness, warmth, or swelling that does not settle with rest and ice.

A physiotherapist can show you the correct form and adjust the exercises to your stage of healing.

• Begin only when your doctor or physiotherapist says it is safe.
• Move slowly and breathe normally during each exercise.
• Stop if you feel dizzy or if pain rises sharply.
• Keep the wound clean and dry.
• Use ice or elevation after exercise if swelling appears.

Safe Exercises You Can Do in Bed (Week 1-2)

In the first two weeks, most post knee replacement physiotherapy exercises are done lying down. These movements promote blood flow and gentle muscle activation without placing weight on the new joint.

Ankle pumps

Lie on your back with legs straight. Point your toes away from you, then pull them back towards your shin. Repeat 10–15 times. This helps reduce swelling and keeps the calf muscles active.

Quad sets

While lying down, tighten the muscle on the front of your thigh. Push the back of your knee gently into the bed and hold for 5–10 seconds. Relax and repeat 8–10 times.

Glute squeezes

Squeeze your buttock muscles together and hold for 5 seconds. Relax and repeat 10 times. This supports the hip and improves stability without moving the knee.

Heel slides

Lie on your back. Slowly slide the heel of the operated leg towards your body, bending the knee as far as comfortable. Slide back to straight. Do 5–8 gentle repetitions.

Seated and Standing Exercises (Week 3-6)

From week three onwards, you can add seated and light standing movements if your physiotherapist agrees. These build on the earlier exercises and help with seated knee flexion and balance.

Seated knee flexion

Sit on a sturdy chair with both feet on the floor. Slowly slide the foot of the operated leg back, bending the knee. Return to the start position. Perform 8–10 times. Keep the movement smooth and pain-free.

Straight leg raises

Lie on your back or sit with the leg straight. Tighten the thigh muscle and lift the straight leg a few inches off the bed or floor. Hold for 3–5 seconds, then lower slowly. Repeat 5–8 times.

Mini squats with support

Stand in front of a stable chair or walker. Hold on for balance. Bend both knees slightly, as if sitting down a few inches. Keep the movement small. Straighten and repeat 5–8 times.

Short walks

Walk slowly around your home using a walker or stick if needed. Aim for short distances several times a day. Good posture and even steps help maintain balance and prevent stiffness after knee replacement.

How to Make Progress While Staying Safe

Increase repetitions gradually, perhaps adding two or three extra each week only if the knee feels comfortable. Combine exercises with deep breathing to stay relaxed.

A physiotherapist can review your technique during home physio after joint replacement or at the clinic. They may suggest small changes based on how your knee is healing. Progress is individual.

When to Seek Professional Help in Jaipur

Contact your doctor or physiotherapist if you have sudden increase in pain, redness that spreads, fever, or if the knee locks and will not bend at all.

At Trivayu Physio Center in Vaishali Nagar and Vidyadhar Nagar, the team offers post-surgery and joint replacement rehab. They use manual therapy, exercise therapy and advanced electrotherapy when appropriate.

Common questions

What are the safest exercises in the first 4 weeks after knee replacement?

Ankle pumps, quad sets, glute squeezes and gentle heel slides while lying in bed are usually the safest. They require no weight on the joint and help circulation and muscle activation.

How often should I do knee exercises at home after surgery?

Most patients do short sessions three to four times a day. Five to ten repetitions of each exercise per session is a common starting point. Your physiotherapist will adjust the frequency to suit your comfort and healing.

When can I start bending my knee after replacement surgery?

Many surgeons allow gentle bending within the first few days once the wound is stable. The exact time depends on your surgical technique and swelling.

Are there any exercises I must avoid in the early weeks?

Avoid deep squats, twisting movements, high steps, or any action that causes sharp pain. Do not force the knee into full bend or use weights until your physiotherapist clears you.

How can I reduce swelling while doing home exercises after knee replacement?

Perform ankle pumps regularly, elevate the leg after each session, and apply ice for 10–15 minutes. Keep movement gentle and avoid long periods of standing in the first four weeks.

Early movement and the right exercises after knee replacement support a smoother recovery. Listen to your body, stay within comfortable limits, and work with a physiotherapist for best results. Book an assessment at Trivayu Physio Center by calling +91 90570 65065 or send a message on WhatsApp. Our team can guide your home programme or provide hands-on care at the clinic or at your home in Jaipur.

When to see a doctor, not a physiotherapist

Physiotherapy is not the right first step for everything. Seek medical assessment promptly if any of the following apply to you:

• Redness, heat, increasing pain or discharge at the surgical site, which may indicate infection
• Calf pain, swelling or warmth, or sudden breathlessness or chest pain, which need emergency care
• A sudden loss of movement or a pop with sharp pain
• Pain following a significant fall, road accident or other major injury
• Fever, chills or feeling generally unwell alongside the pain
• Weakness that is getting worse, or numbness that is spreading
• Unexplained weight loss, or a past history of cancer
• Pain that is constant, wakes you at night and does not change with position

If you lose control of your bladder or bowels, develop numbness around the groin, or have chest pain or breathlessness, treat it as an emergency and go to hospital.

Safety limits and when this does not apply

• Always follow the operating surgeon's protocol. Where this article and your surgeon differ, follow your surgeon.
• Weight-bearing limits and range-of-motion restrictions after surgery are specific to your operation and must not be taken from a general article.
• This article is general information. It is not an assessment of your problem, and it cannot account for your medical history, medication or imaging.

References

1. NHS: Recovering from surgery
2. WHO: Rehabilitation

How this article was produced

• Evidence. Guidance on post-surgical rehabilitation here follows the 2 sources listed under References above.
• Clinical experience. Practical points on what tends to help in the clinic reflect the experience of the Trivayu physiotherapy team in Vaishali Nagar, Jaipur, and are not the same as trial evidence.
• Opinion. Where we suggest a preference or an approach, that is our clinical judgement. Other qualified clinicians may reasonably differ.
• Author. Dr. Ajit Choudhary, B.P.T.
• Published. 27 July 2026.