Roughly 60 percent of patients with significant osteoarthritis have it in both knees. The historical approach was to do one knee, recover, then do the other six months later. The patient went through two separate surgeries, two anesthesias, two hospital stays and two recovery periods. For many patients today, that double inconvenience is unnecessary. Both knees can be replaced in a single sitting.
Bilateral knee replacement is not for everyone. The patient must be medically fit. The surgical team must be experienced. The hospital must be set up for the higher post-operative care needs. When all three conditions are met, it is one of the most efficient operations in modern orthopedics.
What Is Bilateral Knee Replacement?
Bilateral knee replacement, also called simultaneous bilateral total knee replacement, is the replacement of both knee joints in a single surgical session under one anesthetic. Both knees are operated on consecutively or with a brief gap, depending on the team setup.
This is different from staged bilateral knee replacement, where one knee is replaced first and the second knee is operated weeks or months later. Both options have a place - the choice depends on the patient's medical fitness, age and circumstances.
Advantages of Bilateral (Simultaneous) Knee Replacement
One Hospital Stay, One Recovery
Total hospital stay of 4 to 6 days versus two separate stays of 3 to 5 days each. Total active rehabilitation period of 12 to 16 weeks versus 24 to 32 weeks across two staged surgeries.
One Anesthesia
Reduced cumulative anesthesia exposure compared to two separate anesthetics.
Cost Savings
Bilateral surgery typically costs 15 to 25 percent less than two separate knee replacements done at different times because some fixed costs (operation theatre, anesthesia, pre-operative workup) are shared.
Symmetric Recovery
Both legs heal together. The patient does not have one strong leg and one weak leg during a long recovery period - a problem in staged surgery where the unoperated arthritic knee is overloaded for months.
Earlier Return to Lifestyle
Most patients return to all desired activities by 3 to 4 months after bilateral surgery, versus 6 to 9 months for fully recovered staged bilateral surgery.
Strict Medical Fitness Requirements
Bilateral knee replacement places more stress on the body than single knee replacement. It is appropriate only for patients who can tolerate that stress.
Suitable Candidates
- Age typically below 75 (some fit patients above 75 are also candidates)
- BMI ideally below 35
- Well-controlled diabetes (HbA1c below 7)
- No significant cardiac disease, or stable cardiac disease cleared by a cardiologist
- Adequate kidney function
- No active infection anywhere in the body
- Adequate hemoglobin levels (above 12 g/dL)
- Strong motivation and good support at home for the recovery period
Staged Surgery May Be Safer If
- Age is above 75 with multiple comorbidities
- Significant cardiac, lung or kidney disease
- BMI is above 40
- Hemoglobin is borderline low
- History of blood clots or bleeding disorders
- Patient lives alone or has limited home support
Pre-Operative Workup for Bilateral Knee Replacement
- Complete blood count, kidney function, liver function, sugar profile
- Echocardiogram and ECG
- Cardiac stress test in patients above 60 or with cardiac risk factors
- Chest X-ray and pulmonary function test if indicated
- Dental clearance to rule out hidden infection
- Anesthesia review with detailed risk assessment
- Pre-operative physiotherapy assessment and exercise programme
How the Surgery Is Performed
Under regional anesthesia (combined spinal and epidural) most often, supplemented with sedation. General anesthesia is used when medically required. Total surgical time is 2 to 2.5 hours for both knees combined.
Most teams operate on one knee fully - exposure, bone preparation, implant placement, soft-tissue balancing, closure - before starting the second knee. Some teams have two surgical setups working in parallel after the surgeon has done the bone preparation. Dr. Solunke's preferred approach is sequential single-surgeon operating, ensuring identical surgical quality on both knees.
Blood loss is higher than single knee replacement. A blood transfusion is given selectively when needed. Modern blood-saving techniques (tranexamic acid, careful tissue handling) have reduced transfusion rates significantly.
Recovery After Bilateral Knee Replacement
Day 1 to 3
Walking with walker by evening of day 1 - both knees together. Sitting in chair for meals. Knee bending exercises in bed. Discharge typically on day 4 to 6, slightly later than single knee replacement.
Week 1 to 4
Walker use indoors. Knee flexion target 90 degrees by week 2. Stitches removed at day 12 to 14. The first 4 weeks are slower than single knee recovery because both knees are healing simultaneously.
Week 4 to 8
Walker progressing to stick. Knee flexion 110 degrees by week 6. Most desk-job patients return to office in this window.
Week 8 to 12
Stick discarded. Stair climbing without aid. Return to driving and most daily activities.
Month 3 to 6
Full functional recovery. Light gym, walking sports, recreational tennis, golf, swimming. Long walks and travel.
Pricing for Bilateral Knee Replacement in Pune
- Bilateral conventional knee replacement: Rs. 4.3 to 5.5 lakh inclusive of both knees
- Bilateral subvastus or robotic knee replacement: Rs. 4.3 to 5.5 lakh + Rs. 50,000 robotic charge
- Implant cost (already included in package, but premium implants cost more)
- Hospital stay: 4 to 6 days
Bilateral surgery offers a 15 to 25 percent cost saving over two staged surgeries. Most insurance plans accept bilateral knee replacement on cashless basis. Confirm pre-authorization of full package amount in advance.
