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Pain After Knee Replacement Surgery: Dr. Mayur Rabhadiya Explains What Is Normal

Is Pain Normal After Knee Replacement Surgery?

Pain is expected during the early recovery period after knee replacement.

The operation involves:

  • A surgical incision

  • Preparation of bone surfaces

  • Movement of muscles and soft tissues

  • Implant insertion

  • Postoperative swelling

  • Gradual restoration of knee movement

Normal healing pain should generally become more manageable over time, even though it may fluctuate from one day to another.

A more active day, longer physiotherapy session or increased walking may temporarily increase:

  • Soreness

  • Swelling

  • Tightness

  • Night discomfort

  • Muscle fatigue

Pain that consistently worsens, returns suddenly after improvement or occurs with other warning signs requires medical assessment.

Dr. Mayur Rabhadiya is an Orthopedic & Joint Replacement Surgeon in Mumbai with a focused practice in total, partial, robotic-assisted and revision knee replacement.

For the general recovery pathway, read Knee Replacement Recovery Timeline.

Pain That May Be Expected During Early Recovery

Common early discomfort may include:

  • Pain around the incision

  • Deep aching within the knee

  • Thigh-muscle soreness

  • Pain during knee bending

  • Discomfort while standing or walking

  • Night pain

  • Tightness caused by swelling

  • Tenderness around bruised areas

  • Mild burning or altered sensation near the scar

  • Stiffness after rest

The pattern should generally show gradual improvement.

Recovery is not always linear. Pain may be better for several days and then temporarily increase after greater activity.

Incision and Scar Pain

The skin and tissues around the incision may feel:

  • Tender

  • Tight

  • Numb

  • Sensitive

  • Mildly burning

  • Uncomfortable when clothing touches the area

A patch of numbness beside the scar is common because small skin nerves are affected during surgery.

Scar discomfort often improves gradually.

Assessment is required when the incision develops:

  • Increasing redness

  • Drainage

  • Separation

  • Increasing warmth

  • Rapidly worsening tenderness

  • Fever or chills

Night Pain After Knee Replacement

Night pain is common during the first several weeks.

It may occur because of:

  • Swelling accumulated during the day

  • Reduced distraction at night

  • Muscle soreness

  • Difficulty finding a comfortable position

  • Medication wearing off

  • Increased activity during physiotherapy

  • Sleep-cycle disturbance after surgery

Night pain should generally reduce gradually.

Severe night pain that is progressively worsening or accompanied by fever, wound drainage or increasing redness should not be assumed to be routine healing pain.

Pain During Physiotherapy

Some discomfort during knee movement and strengthening is expected.

However, physiotherapy should not repeatedly produce:

  • Severe pain

  • Major swelling lasting into the next day

  • Loss of previously gained movement

  • Inability to walk after the session

  • Wound stress

  • Persistent sleep disturbance

Rehabilitation should be progressive rather than forceful.

Excessively aggressive bending may increase:

  • Swelling

  • Muscle guarding

  • Fear of movement

  • Pain medication requirements

  • Difficulty continuing rehabilitation

Read Physiotherapy After Knee Replacement Surgery.

Pain and Swelling After Increased Activity

Pain may temporarily increase after:

  • Prolonged standing

  • Longer walks

  • Stair practice

  • Repeated exercises

  • Sitting with the leg down

  • Returning to household activity too quickly

This often improves with:

  • Activity modification

  • Appropriate rest

  • Leg elevation

  • Cold therapy when advised

  • Prescribed medication

  • Gradual progression

The overall trend should still be toward improvement.

A sudden major increase in pain or swelling without an obvious activity-related explanation requires review.

How Long Does Pain Usually Continue?

There is no fixed pain-free date.

Pain intensity and duration depend on:

  • Total or partial replacement

  • One or both knees

  • Primary or revision surgery

  • Preoperative stiffness

  • Severity of deformity

  • Individual pain sensitivity

  • Swelling

  • Muscle strength

  • Medical health

  • Rehabilitation

  • Complications

Many patients notice substantial improvement during the first several weeks, but activity-related discomfort, stiffness and night pain may continue for longer.

Strength, swelling and confidence may continue improving for several months.

Partial knee replacement may have a faster early recovery in appropriately selected patients, while revision or bilateral replacement may require longer rehabilitation.

When Is Pain Not Normal?

Contact the treating team promptly for:

  • Pain that is becoming progressively worse

  • Increasing pain after an initially improving period

  • Severe pain at rest

  • Increasing redness or wound tenderness

  • Wound drainage

  • Persistent fever

  • Chills or feeling unwell

  • Rapidly increasing swelling

  • New inability to bear weight

  • Repeated knee giving way

  • Sudden loss of movement

  • Pain after a fall

  • Increasing calf pain or swelling

  • New foot weakness or numbness

Sudden chest pain, breathlessness, fainting or a cold and pale foot requires emergency care.

Calf Pain After Knee Replacement

Calf discomfort can sometimes result from:

  • Muscle soreness

  • Altered walking

  • Bruising

  • Swelling

However, a blood clot must be considered when calf pain is associated with:

  • Increasing tenderness

  • New swelling of the calf, ankle or foot

  • Redness

  • Unequal swelling between the legs

  • Unexplained breathlessness

The patient should not massage a painful swollen calf or simply increase exercise without medical advice.

Infection After Knee Replacement

Infection may occur shortly after surgery or much later.

Possible symptoms include:

  • Increasing knee pain

  • Persistent swelling

  • Increasing warmth or redness

  • Wound drainage

  • Fever

  • Chills

  • Progressive stiffness

  • Pain during both activity and rest

Not every infection causes high fever or obvious wound drainage.

A low-grade infection may present mainly as:

  • Persistent pain

  • Recurrent swelling

  • Increasing stiffness

  • Implant loosening

Evaluation may require:

  • Clinical examination

  • Blood inflammatory markers

  • Joint-fluid aspiration

  • Microbiology testing

  • Imaging

Antibiotics should not be started independently before appropriate assessment because this may affect culture results.

Stiffness and Scar-Tissue Pain

Pain may occur when the knee does not regain sufficient movement.

Contributing factors may include:

  • Limited movement before surgery

  • Swelling

  • Muscle guarding

  • Scar formation

  • Delayed rehabilitation

  • Infection

  • Implant position

  • Previous operations

Management depends on the cause and may include:

  • Adjusted physiotherapy

  • Swelling control

  • Pain management

  • Examination and X-rays

  • Manipulation under anaesthesia in selected patients

  • Further treatment when a mechanical problem is identified

More forceful exercise is not automatically the correct response to every stiff knee.

Instability or Giving-Way Pain

A replaced knee may feel unstable because of:

  • Quadriceps weakness

  • Poor balance

  • Ligament imbalance

  • Implant wear

  • Component position

  • Inappropriate walking-aid removal

Early weakness may improve with rehabilitation.

Persistent painful instability, repeated buckling or falls requires orthopedic assessment.

Read Revision Knee Replacement in Mumbai.

Clicking and Mechanical Sensations

Mild clicking without pain may occur because the artificial knee contains metal and plastic components.

Review is more important when clicking is associated with:

  • Pain

  • Swelling

  • Instability

  • Catching

  • Sudden loss of movement

  • A change after a fall

A painless sound does not necessarily indicate implant failure.

Burning, Tingling or Electric-Shock Pain

Burning or tingling near the incision may occur while small skin nerves recover.

Persistent or severe nerve-type pain may require assessment when there is:

  • Marked sensitivity to light touch

  • Widespread burning

  • New weakness

  • Foot numbness

  • Colour or temperature change

  • Severe pain disproportionate to the examination

The cause may involve local nerve irritation, lumbar-spine disease or a less common pain condition.

Pain Months or Years After Knee Replacement

New pain after a previously satisfactory knee replacement should be assessed.

Possible causes include:

  • Implant loosening

  • Polyethylene wear

  • Infection

  • Instability

  • Fracture

  • Stiffness

  • Patellar problems

  • Tendon irritation

  • Trauma

  • Pain referred from the hip or spine

The presence of pain does not automatically mean that revision surgery is required.

The cause should be identified before treatment is selected.

Pain From the Hip or Spine

Pain felt around a replaced knee may occasionally originate elsewhere.

Possible sources include:

  • Hip arthritis

  • Lumbar-spine disease

  • Nerve compression

  • Muscle or tendon conditions

  • Circulation problems

Clues may include:

  • Groin pain

  • Back pain

  • Pain travelling below the knee

  • Tingling

  • Numbness

  • Weakness

  • Knee X-rays that do not explain the symptoms

Revision surgery is unlikely to help when the implant is not the principal pain source.

How a Painful Knee Replacement Is Evaluated

Assessment may include:

  • When the pain began

  • Whether the knee initially improved

  • Pain location

  • Pain during activity or rest

  • Wound history

  • Fever or drainage

  • Instability

  • Knee movement

  • Walking pattern

  • Previous operation records

  • Implant details

  • Weight-bearing X-rays

  • Blood tests

  • Joint aspiration when infection is suspected

  • CT or other imaging in selected cases

The objective is to distinguish:

  • Normal healing

  • Rehabilitation-related pain

  • Infection

  • Stiffness

  • Instability

  • Implant loosening

  • Fracture

  • Referred pain

  • Another medical condition

Pain Management During Recovery

Pain treatment may include a combination of:

  • Prescribed medication

  • Cold application when advised

  • Elevation

  • Swelling management

  • Short, regular walks

  • Appropriate physiotherapy

  • Activity modification

  • Sleep-position adjustments

  • Reassurance and review

Medication selection depends on:

  • Kidney function

  • Heart disease

  • Stomach or bleeding risk

  • Blood-thinning medication

  • Allergy history

  • Other prescriptions

Opioid medicines should be used only as prescribed and reduced as pain improves.

Patients should not increase doses or combine medicines without medical advice.

Common Mistakes That Can Worsen Pain

Avoid:

  • Excessive walking too early

  • Forceful bending through severe pain

  • Remaining in bed for prolonged periods

  • Stopping the walking aid while still limping

  • Placing a pillow permanently under the bent knee

  • Ignoring progressive swelling

  • Using unapproved massage over the wound

  • Starting heavy gym exercise too early

  • Taking additional pain medicines without checking interactions

  • Assuming every new pain is normal

The balance between movement and recovery should be individualised.

Why Patients Consult Dr. Mayur Rabhadiya

Dr. Mayur Rabhadiya follows a diagnosis-first approach to pain after knee replacement.

His assessment emphasises:

  • Distinguishing expected healing pain from complications

  • Reviewing the pain timeline and location

  • Examining movement, strength and stability

  • Assessing the wound and swelling

  • Reviewing X-rays and previous surgical records

  • Excluding infection when indicated

  • Identifying stiffness or instability

  • Considering hip, spine or nerve-related pain

  • Avoiding unnecessary revision surgery

  • Explaining realistic recovery expectations

Read more about Dr. Mayur Rabhadiya’s qualifications and joint-replacement practice.

Painful Knee-Replacement Consultation in Ghatkopar, Mumbai

Diabplus Clinic, Ghatkopar East

601, 6th Floor, Skyline Status, Mahatma Gandhi Road, opposite Pooja Hotel, Pant Nagar, Ghatkopar East, Mumbai, Maharashtra 400077.

Visit Dr. Mayur Rabhadiya in Ghatkopar East.

Savla Clinic, Ghatkopar West

2/3, Dharmodaya Building, next to Raj Medical, near NULife Hospital, Jivdaya Lane, Ghatkopar West, Mumbai, Maharashtra 400086.

Visit Dr. Mayur Rabhadiya in Ghatkopar West.

Frequently Asked Questions

Is pain normal after knee replacement?

Yes. Pain is expected during early healing, particularly with movement, walking and exercise.

How long does pain last?

It usually improves over several weeks, although activity-related discomfort, swelling and night pain may continue for longer.

Is night pain normal?

Some night pain is common early. Progressively increasing night pain or pain accompanied by fever, redness or drainage requires review.

Why does pain increase after physiotherapy?

Temporary soreness may result from increased movement or strengthening. Severe or prolonged worsening suggests that the programme may need adjustment.

Is burning near the scar normal?

Mild burning or altered sensation may occur as small skin nerves recover. Severe or spreading nerve symptoms should be assessed.

Is clicking painful after knee replacement?

Painless clicking may occur normally. Painful clicking with swelling, instability or catching requires review.

Why does the knee hurt after sitting?

Swelling, stiffness and reduced muscle activation may cause discomfort during the first few steps.

Is calf pain normal?

Not always. New calf pain with tenderness or swelling must be assessed for a possible blood clot.

What are infection warning signs?

Increasing pain, fever, chills, redness, swelling and wound drainage are important warning signs.

Can an infection occur years later?

Yes. Infection may occur long after the original operation and may present as pain or loosening.

Why does my knee still hurt months after surgery?

Possible causes include stiffness, instability, infection, implant problems, nerve pain or referred pain from the hip or spine.

Does persistent pain mean the implant is loose?

No. Loosening is one possible cause, but examination and imaging are required.

Will more physiotherapy always solve persistent pain?

No. Treatment depends on the cause. Forceful rehabilitation may worsen some problems.

When is revision surgery required?

Revision may be considered only when a defined implant, infection, stability or mechanical problem is identified.

Should I seek a second opinion?

Yes, particularly when pain remains unexplained or revision surgery has been advised without a clear diagnosis.

About the Author

Dr. Mayur Rabhadiya
Orthopedic & Joint Replacement Surgeon

Qualifications

  • MBBS

  • D’Ortho

  • DNB Orthopedics

  • MNAMS Orthopedics

  • Fellowship in Robotic & Computer-Navigated Joint Replacement

Clinical focus

  • Pain after knee replacement

  • Total knee replacement

  • Partial knee replacement

  • Robotic-assisted knee replacement

  • Postoperative stiffness and instability

  • Knee-replacement infection assessment

  • Painful implant evaluation

  • Revision knee replacement

Written and medically reviewed by: Dr. Mayur Rabhadiya
Last medically reviewed: June 2026

Clinical References

Book a Painful Knee-Replacement Assessment

Consultation may be useful if:

  • Pain is worsening rather than improving

  • Night or rest pain remains severe

  • The knee repeatedly swells

  • The knee feels unstable

  • Movement is not improving

  • Infection has been suspected

  • Pain has developed months or years after replacement

  • Revision surgery has been advised

  • The cause of pain remains unclear

  • You require a second opinion

Book an orthopedic consultation with Dr. Mayur Rabhadiya in Ghatkopar, Mumbai

Call or WhatsApp

+91 84249 03913
+91 96113 30063

Medical Disclaimer

This page provides general patient education and does not replace examination by the operating surgeon or another qualified orthopedic specialist. Pain patterns vary according to the operation, healing, medical health and rehabilitation. Seek prompt medical assessment for increasing pain, fever, wound drainage, progressive redness, new calf swelling, repeated instability or inability to bear weight. Sudden chest pain, breathlessness, fainting or a cold and pale foot requires emergency care.

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