First Week After Knee Replacement

The first week after knee replacement is usually the most demanding phase of home recovery. Pain, swelling, bruising, stiffness, fatigue, poor sleep and dependence on help are common. These symptoms do not by themselves mean the operation has failed, but the overall pattern should remain medically stable and should not show progressive deterioration.

The priorities are safe walking, correct medicines, wound protection, swelling control, basic exercises, fall prevention, food and fluids, bowel care, caregiver support and knowing when to contact the treating team. Review Hospital Stay After Knee Replacement before discharge when possible.

Quick Answer: What Should I Expect in the First Week?

Expect soreness during movement, swelling that often increases toward evening, bruising that may move down the leg, disturbed sleep, short assisted walks and simple exercises. The patient should be able to take medicines, eat and drink, use the bathroom, protect the wound and contact the team if symptoms worsen. Recovery is not measured by one bending number or walking distance.

The First Day at Home

Keep the first day simple. Use the prescribed walking aid, take medicines according to the discharge plan, eat light balanced meals, drink according to medical advice, elevate the leg, perform the approved exercises and rest between activities. A responsible adult should ideally be available, particularly when the patient is unsteady, lives alone or has medical conditions.

Medicine Safety During the First Week

Use the discharge medicine list rather than memory. Confirm the purpose and timing of pain medicines, blood thinners, stomach protection, bowel medicines, diabetes treatment and regular prescriptions. Do not double a missed dose, add an over-the-counter painkiller, restart a paused medicine or combine sedating medicines without advice. Report excessive drowsiness, repeated vomiting, rash, breathing difficulty, confusion or inability to take fluids.

Pain and Night Discomfort

Pain often fluctuates and may increase when a nerve block wears off, after walking or exercises, or at night. The aim of treatment is to allow rest, transfers and rehabilitation. Pain should gradually become more manageable. Severe pain that steadily worsens, returns suddenly after improvement or occurs with fever, wound drainage, marked swelling, inability to bear weight or a cold foot requires assessment.

Read Pain After Knee Replacement Surgery.

Swelling, Bruising and Warmth

Swelling may involve the knee, calf, ankle and foot and often increases after activity or when the leg remains down. Bruising can change colour and move downward. Mild warmth can occur during healing. The pattern should stabilise and gradually improve. New calf pain, unequal swelling, increasing redness, wound drainage or swelling that does not improve with elevation needs review.

Read Swelling After Knee Replacement.

Elevation and Cold Therapy

Elevation is usually more useful when the heel and lower leg are supported and the ankle is above heart level when practical. Avoid keeping only a pillow behind the bent knee for prolonged periods because this can make straightening harder. Cold therapy may reduce pain and swelling when used as advised, with a protective cloth and caution over numb skin. Do not sleep with a cold pack in place.

Wound and Dressing Care

Keep the dressing clean, secure and protected according to the written instructions. Do not repeatedly open it or apply antiseptic, powder, oil, cream, antibiotic ointment or a home remedy unless prescribed. Contact the team when staining is spreading, the dressing becomes repeatedly wet, drainage is cloudy or foul-smelling, redness is increasing, the incision appears to open or the wound becomes more painful.

Read Wound Care After Knee Replacement.

Walking During the First Week

Short, regular walks are generally preferable to one long walk. Use the prescribed walker, crutches or stick, wear secure footwear and turn with small steps rather than pivoting on the operated leg. The walking aid should not be abandoned merely because a certain day has arrived. Progress when the knee is controlled and the gait is safe.

Too much activity may cause a large increase in evening swelling, limping, night pain, fatigue or reduced movement the next day. The usual response is better pacing, not complete bed rest. Read Walking After Knee Replacement.

Exercises During the First Week

The prescribed programme commonly includes ankle pumps, quadriceps tightening, supported knee straightening, heel slides, gentle bending, sit-to-stand practice and short walks. The exercises should be controlled and repeated as advised. Forceful bending through severe pain can increase swelling, guarding and fear and is not automatically better rehabilitation.

Read Physiotherapy After Knee Replacement.

Knee Straightening and Bending

Both directions matter. A knee that remains bent can make standing and walking harder, so prolonged resting with the knee supported only in flexion should be avoided unless specifically instructed. Bending is progressed according to swelling, pain and tissue response. There is no universal first-week angle that proves success or failure.

Sleep, Fatigue and Mood

Sleep disturbance is common because of pain, swelling, medicine timing and difficulty changing position. Keep the walking aid and light within reach for bathroom visits. Fatigue, irritability and frustration are also common after major surgery. Rest is necessary, but prolonged immobility increases stiffness and clot risk. Read Sleeping After Knee Replacement.

Food, Fluids and Constipation

Balanced meals with adequate protein support healing. Fibre, fluids and movement help bowel function, but patients with heart, kidney or fluid restrictions should follow their medical plan. Constipation is common with opioid medicines and reduced activity. Use the prescribed bowel regimen and contact the team for persistent vomiting, severe abdominal pain or inability to pass urine or stool.

Bathing, Toilet Use and Home Safety

Bathing depends on the dressing and wound instructions. Avoid soaking the incision, slippery floors, unsupported standing and low seating. A raised toilet seat, shower chair, grab rail or caregiver assistance may be useful. Keep pathways clear, use night lighting and avoid carrying objects while using a walker.

Stairs During the First Week

Use the method taught in hospital and the railing or support advised. Avoid repeated trips when they are not necessary. Supervision is appropriate if the patient is weak, dizzy, uncertain or using a new walking aid. Stair ability depends on strength and safety, not on proving rapid recovery.

Caregiver Support and Daily Pacing

Caregivers can organise medicines, meals, transport, ice packs, exercises and safe walking without taking over every task. A useful daily rhythm alternates medicines, meals, short walks, exercises, elevation and rest. Large bursts of activity followed by prolonged exhaustion usually produce more swelling than consistent pacing.

What Not to Do in the First Week

Do not stop the walking aid early, force deep bending, squat, sit on the floor, kneel, massage a painful swollen calf, soak the wound, apply unprescribed products, drive, lift heavy objects, change medicines independently or ignore progressive symptoms. Robotic assistance and the mini-subvastus approach do not remove the need for these early precautions.

Warning Signs During the First Week

Contact the treating team for increasing wound drainage, spreading redness, fever, worsening pain after initial improvement, rapidly increasing swelling, new calf pain, repeated knee buckling, inability to bear weight, a fall, persistent vomiting, confusion or medicine reactions. Chest pain, sudden breathlessness, fainting, coughing blood or a cold pale foot requires emergency care.

Questions Patients Commonly Ask

How much pain is normal in the first week?

Pain with movement is expected, but it should be manageable with the prescribed plan and should not worsen steadily each day.

How often should I walk?

Use short, regular walks according to the discharge and physiotherapy plan rather than one long walk.

How much should the knee bend?

There is no universal first-week number. Preoperative stiffness, swelling, pain and muscle control affect early movement.

Is bruising down to the ankle normal?

It can occur as blood moves through the tissues, but rapidly increasing swelling, calf pain or persistent bleeding needs review.

Can I sleep on my side?

Usually when comfortable and safe to turn, with pillows used to support the leg and avoid twisting if helpful.

Can I shower?

Only according to the dressing and wound instructions. Do not assume that every dressing is waterproof.

Is it normal to feel exhausted?

Yes. Surgery, poor sleep, medicines, anaemia and reduced appetite can cause fatigue. Sudden severe weakness or breathlessness needs assessment.

When can I stop using the walker?

When gait, balance and knee control are safe and the treating team agrees—not on a fixed day.

Can I be alone at home?

Some independent patients can, but early support is advisable when balance, medicines, stairs or medical conditions create risk.

Does robotic surgery make the first week painless?

No. Robotic assistance supports planning and execution but does not eliminate surgical pain, swelling or rehabilitation.

Clinical References and Further Reading

NICE NG157: Postoperative rehabilitation after joint replacement

AAOS OrthoInfo: Activities After Total Knee Replacement

NHS: Recovering From a Knee Replacement

About Dr. Mayur Rabhadiya

Dr. Mayur Rabhadiya is an Orthopedic and Joint Replacement Surgeon in Mumbai. His focused knee practice includes total and partial replacement, minimally invasive mini-subvastus robotic knee replacement, bilateral planning, revision assessment and structured postoperative recovery. His qualifications are MBBS, D’Ortho, DNB (Orthopedics), MNAMS (Orthopedics) and FIJR (Robotic & Navigation).

Last medically reviewed: 24 July 2026. Medical reviewer: Dr. Mayur Rabhadiya.

Book a Postoperative Knee Replacement Consultation

Patients concerned about pain, swelling, wound healing, walking, sleep, medicines or early recovery can consult Dr. Mayur Rabhadiya in Ghatkopar East or Ghatkopar West, Mumbai. Call or WhatsApp +91 84249 03913 or +91 96113 30063, or use the orthopedic appointment page.

Medical Disclaimer

This guide provides general education and does not replace individual postoperative instructions. Medicines, dressings, bathing, walking, exercises and warning signs vary by procedure, health and hospital protocol.