Bilateral Knee Replacement — Replacing Both Knees at Once

What is bilateral knee replacement?

Bilateral knee replacement means replacing both knee joints in a single surgical procedure, under one anaesthetic. Rather than having two separate operations — typically spaced 6–12 weeks apart — the patient has both knees treated simultaneously and goes through a single period of recovery.

It is not the right choice for every patient. But for the right patient, it is a genuinely compelling option — one operation, one hospital stay, one recovery, and both knees restored at the same time.

Who is a candidate for bilateral knee replacement?

The most important criterion is straightforward: both knees must be genuinely painful and causing significant functional limitation. Bilateral replacement is not done prophylactically — we do not replace a knee that is not yet causing significant problems simply because the other one needs surgery.

Beyond that, the patient must be medically fit for a longer surgical procedure. The criteria I assess include:

• Both knees equally painful and causing significant limitation of daily activities.
• Good cardiac function: The heart must be able to handle a longer operation and the fluid shifts that come with two simultaneous joint replacements.
• Good lung function: Adequate respiratory reserve for the demands of surgery and early recovery.
• Adequate haemoglobin: Bilateral surgery involves greater blood loss than single knee replacement. Haemoglobin should be at a safe level before surgery and patients may require pre-operative optimisation.
• No active infection anywhere in the body.
• No severe obesity that would make positioning and recovery unsafe.

What are the advantages of bilateral knee replacement?

• One anaesthetic: Eliminates the risk of a second anaesthetic exposure.
• One hospital stay: Typically 72 hours at NHS Hospital Jalandhar for bilateral replacement.
• One recovery period: Both knees rehabilitate simultaneously, returning the patient to full function sooner overall.
• Cost saving: The combined cost of bilateral robotic knee replacement at NHS Hospital Jalandhar (₹4.5–5 lakhs) is significantly less than two separate procedures.
• Symmetrical recovery: Both knees reach the same functional level together, avoiding the imbalance that can occur when one knee is operated on and the other remains painful.
• Single period away from work and family responsibilities.

What are the risks of bilateral knee replacement?

Bilateral replacement carries a higher surgical risk than single knee replacement — and I am completely transparent about this with every patient:

• Greater blood loss: Two joints means twice the surgical area and therefore greater potential blood loss. Pre-operative haemoglobin optimisation and intraoperative blood conservation techniques are essential.
• Longer anaesthetic time: Increases the demands on the heart, lungs, and overall physiology.
• Higher risk of medical complications: In the immediate post-operative period — including DVT (blood clots) and chest complications.
• More demanding early recovery: Having both knees operated on simultaneously means the patient cannot favour one side, which requires stronger early physiotherapy support.

These risks are manageable with careful patient selection, meticulous surgical technique, and a structured post-operative protocol. But they are real risks that must be understood and accepted before proceeding.

Recovery after bilateral knee replacement at NHS Jalandhar

• Surgery day: Both knees operated on under one anaesthetic — CORI robotic system used for both.
• Hours after surgery: Patients begin physiotherapy — even with both knees operated on, early movement is essential.
• 72 hours: Discharge home — our standard for bilateral knee replacement.
• First 2 weeks: Walking with support (frame or walker). Both knees bending and strengthening simultaneously.
• 6 weeks: Most patients walking independently. Driving typically possible from 6 weeks.
• 3 months: Return to regular daily activities.
• 6–12 months: Full functional recovery.

The recovery from bilateral replacement is demanding in the first 2 weeks — more so than single knee replacement. Having support at home during this period is important. I discuss this honestly with every bilateral patient before surgery so that the home environment can be prepared appropriately.

Bilateral knee replacement — the cost

Robotic bilateral knee replacement at NHS Hospital Jalandhar using premium implants from Smith & Nephew, Johnson & Johnson, Zimmer, or Stryker is priced at ₹4.5–5 lakhs for both knees combined.

This represents a significant saving compared to two separate procedures — and compared to equivalent surgery in Chandigarh (approximately ₹1.5 lakhs more) or Delhi (approximately ₹4 lakhs more).

Frequently Asked Questions