Lead Differentiator

Robotic knee
replacement, to plan.

Using the same robotic platform as hip replacement, Mr Kumar can plan and execute your knee replacement with a level of accuracy that is not achievable by hand alone.

3D render of a robotic knee replacement
What it is

Surgeon-led, robot-assisted

The robotic arm does not perform the operation independently. It assists Mr Kumar in executing the pre-planned implant position with greater accuracy than conventional technique alone.

Studies show that robotic placement reduces the risk of implant malpositioning, which is one of the factors linked to long-term function. The surgeon remains in control throughout. The technology adds planning and precision.

A joint implant is a precisely engineered device made from high-grade metal alloy, ceramic and medical-grade polyethylene. Modern implants are designed to last 15 to 25 years in most patients, depending on activity level and body weight.

Read the clinical evidence (PDF)

Why it matters

  • A 3D plan built from your own anatomy
  • Implant placed within millimetres of the plan
  • Reduced risk of implant malpositioning
  • Surgeon-controlled at every step
  • Aimed at accurate, lasting function
A patient journey

He chose robotic, and chose well

Scott researched his options and wanted the robotic approach. Mr Kumar talked through the benefits and trade-offs, then supported the choice that gave Scott the most confidence.

I have no pain. I have no reservation about putting my foot down on an angle. It just isn't a problem. Scott, 71 · Robotic knee patient
Read Scott's full journey
Patient education

Watch: robotic surgery explained

Is this you?

Could robotic knee replacement help you?

Robotic knee replacement suits patients who are considering a knee replacement and want the most precise implant placement available. You might recognise:

  • Pain deep in the knee, made worse by walking, stairs, or standing
  • Stiffness and swelling, especially after rest or activity
  • A knee that gives way, grinds, or no longer straightens fully
  • A wish to understand every option before choosing surgery

Conditions that commonly lead to a knee replacement

  • Knee osteoarthritis
  • Rheumatoid arthritis
  • Post-traumatic arthritis
  • Meniscal damage
  • Cartilage injury
How robotic precision works

Plan. Position. Execute.

Three stages that turn your anatomy into an accurately placed implant.

01 · Plan

A 3D model of your knee

Before surgery, a detailed plan is built around your own anatomy, mapping exactly where the implant should sit.

02 · Position

Robotic guidance

During surgery, the robotic arm assists Mr Kumar in following the plan, keeping placement within millimetres of the target.

03 · Execute

Surgeon in control

Mr Kumar carries out the operation throughout. The technology adds accuracy, it does not replace the surgeon's judgement.

What the procedure involves

The plan, carried out precisely

The operation typically takes 60 to 90 minutes. Mr Kumar removes the damaged surfaces of the knee joint and replaces them with metal and plastic components. The implant position is planned before surgery and executed with robotic guidance.

Knee replacement is most commonly performed under spinal anaesthetic. A nerve block to numb the knee area may also be used to reduce post-operative pain, and this is discussed at your pre-operative assessment.

Physiotherapy begins early, often on the day of surgery. Walking with a frame or crutches is encouraged from the outset.
The Mako robotic-arm system used by Mr Kumar for robotic surgery

On the day

  • Pre-operative 3D plan reviewed
  • Mr Kumar visits you, marks the correct leg, answers final questions
  • Spinal anaesthetic, often with a nerve block for comfort
  • Robotic-guided implant placement, 60 to 90 minutes
  • Recovery room monitoring until you are awake and comfortable
  • Physiotherapy begins the same day, walking encouraged early
Recovery & outcomes

Recovery and what to expect

Recovery follows the same supported path as a conventional knee replacement, built on early physiotherapy. The aim of the robotic approach is accurate placement, which is one of the factors linked to good long-term function.

3D
Pre-operative plan built from your own anatomy
Within mm
Implant placed to the planned position
Large majority
of patients report lasting relief

Going home

Most patients go home 2 to 3 days after knee replacement. Mr Kumar's team ensures a physiotherapy programme is in place before you are discharged.

Week by week
  • Week 1 to 2Elevation, ice, gentle exercises and crutches.
  • Week 3 to 6Increasing walking, physiotherapy, and a driving assessment at 6 weeks.
  • Week 6Review with Mr Kumar.
  • Month 3Most daily activities resumed.
  • 12 monthsFull recovery. Most patients report significant, sustained pain relief.
Self-pay

The cost of robotic knee replacement

£12,000 to £15,000

Typical UK self-pay range, depending on hospital, implant, and individual factors.

See a full cost breakdown

A self-pay package usually includes

  • Hospital fees
  • Surgeon and anaesthetist fees
  • The implant
  • Your inpatient stay
  • Physiotherapy
  • Follow-up appointments
Questions

Robotic surgery, answered

What is robotic knee replacement?

It is a knee replacement planned in 3D from your own anatomy and carried out with the assistance of a robotic arm, which helps Mr Kumar place the implant within millimetres of the plan. It is surgeon-led throughout.

Does the robot perform the surgery?

No. Mr Kumar performs the operation. The robotic arm does not act independently. It assists him in executing the pre-planned implant position with greater accuracy than conventional technique alone.

Is it better than conventional knee replacement?

Studies show robotic placement reduces the risk of implant malpositioning, which is one of the factors linked to long-term function. Mr Kumar will discuss whether the robotic approach suits your knee at consultation.

How long does it last, and how long is recovery?

Modern knee implants are designed to last fifteen to twenty-five years in most patients. Recovery follows the same path as a conventional knee replacement: home within two to three days, a driving assessment around six weeks, and full recovery expected for most by twelve months.

Am I suitable for robotic surgery?

Most patients considering a knee replacement can be considered for the robotic approach. Mr Kumar will assess your knee and your goals and advise you at consultation.

When can I drive or return to work?

A driving assessment is usually possible around six weeks after surgery. When you return to work depends on your role and your recovery, and Mr Kumar will advise you at your review.

What is the difference between private and NHS?

Privately, you choose the timing of your surgery, you are seen quickly, and your care is led by Mr Kumar throughout. The operation itself follows the same evidence-based principles.

Your next step

Ask Mr Kumar if robotic surgery suits you

Book a consultation to find out whether a robotic approach is right for your knee. Most patients are seen within two weeks.

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