Senior Director, Joint Replacement Programme, BLK-Max Super Speciality Hospital, New Delhi
Part 6 of 9 in Diagnosis & Management of Degenerative Joint Disease
Robotic Joint Replacement: Closing the Gap Between a Working Knee and a Happy Patient
September 6, 2026
A knee replacement can function well and still leave the patient dissatisfied, a gap Dr. Ishwar Bohra spent a significant part of his Jivo Healthcare masterclass addressing directly, because it is the problem robotic joint replacement was built to solve.
The unhappy patient, defined
Out of 100 patients who received a manually performed joint replacement, Dr. Bohra estimated that 15 to 25 percent walked and functioned well but were not satisfied: persistent mild pain, stiffness, or a joint that simply did not feel natural, even though the surgical outcome looked good on paper. The three specific problems he named behind that dissatisfaction were early implant loosening, polyethylene wear, and crepitus pain.
How the robot changes the surgery itself
In the operating theatre, sensors and an infrared camera build a real-time map of the patient's own joint on a screen that guides the surgeon, and the robotic arm then performs the bone cuts according to that plan. Dr. Bohra described his own interference in that cutting step as effectively zero once the plan is confirmed, which is what allows the system to reproduce the patient's pre-arthritic joint far more precisely than a manual cut can.
Why precision translates into a natural feel
The robotic system balances the joint across every axis of movement, rather than relying on the surgeon's judgement alone to distribute tension evenly. Dr. Bohra connected this directly to the natural-feel complaints that defined the unhappy-patient group under manual surgery: better balance produces better gait and better joint feedback to the brain, which is what patients actually notice, more than the X-ray result.
Cases where the difference is most visible
Dr. Bohra shared several robotic cases from his own practice during the session: a patient with a malunited tibia fracture and an abnormal walking axis who was painfree and walking without a limp ten days after robotic correction, and another patient with severe pre-operative deformity whose gait transformed from visibly painful to smiling and pain-free almost immediately after surgery. He described these malaligned, previously injured joints as exactly the cases where robotics gives the surgeon what he called an extra edge over a manual approach.
This guide is based on a live Jivo Masterclass: Dr. Ishwar Bohra taught doctors across Africa on April 27, 2025.
FROM THE LIVE Q&A
Dr. Destin Ngendahayo
Is total knee replacement indicated for children with juvenile idiopathic arthritis?
Dr. Ishwar Bohra
Hip replacement can be done even after 13 to 14 years of age, but knee replacement has to wait until 18, because the longevity of implants in children is not very good and outcomes are worse than with hip replacement. If a child is severely affected, knee replacement can be considered after age 16 to 18; before that, an alternative non-replacement approach, such as bracing, is used to manage the pain.
Frequently Asked Questions
Is there any risk of malignant transformation in a patient with a malunited tibia fracture of more than 10 years' duration without treatment?▼
No, a malunited fracture carries no risk of malignant transformation.
What is the total cost of doing a total knee replacement, in dollars?▼
Approximate cost in my own practice runs around 7,000 to 7,500 US dollars, depending on the patient's room selection and other choices. India, and our hospital specifically, offers one of the most subsidised rates in the world compared with the West and the rest of Asia.
Is there a relationship between vitamin D deficiency and osteoarthritis?▼
Definitely, because vitamin D is essential in bone metabolism: it regulates the calcium, magnesium and phosphorus that are the key minerals of bone strength. If vitamin D is low, the subchondral bone that gives cartilage its strength becomes weak, so the cartilage starts to wear and the bone becomes soft and malaligned, which leads to arthritis. This is a major contributory factor that often isn't picked up clinically, so once a patient is diagnosed with hypovitaminosis D, it should be corrected immediately to avoid future complications.
Is total knee replacement indicated for children with juvenile idiopathic arthritis?▼
Hip replacement can be done even after 13 to 14 years of age, but knee replacement has to wait until 18, because the longevity of implants in children is not very good and outcomes are worse than with hip replacement. If a child is severely affected, knee replacement can be considered after age 16 to 18; before that, an alternative non-replacement approach, such as bracing, is used to manage the pain.
What percentage of patients were dissatisfied after manual joint replacement?▼
Dr. Bohra estimated 15 to 25 percent of patients functioned well but remained unhappy, citing persistent mild pain, stiffness, or an unnatural feel in the joint.
What three problems did robotic joint replacement address?▼
Early implant loosening, polyethylene wear, and crepitus pain, the three issues Dr. Bohra named as the main causes of dissatisfaction after manual surgery.
How does robotic-assisted surgery work in the operating theatre?▼
Sensors and an infrared camera map the patient's own joint in real time, and the robotic arm performs the bone cuts according to that plan, reducing the surgeon's direct interference in the cutting step to close to zero.
Which cases benefit most from robotic joint replacement?▼
Complex, malaligned cases such as a malunited fracture with an abnormal walking axis, where Dr. Bohra said robotics gives the surgeon an extra edge over a manual approach.
In This Series: Diagnosis & Management of Degenerative Joint Disease
- 1.Diagnosis and Management of Degenerative Joint Disease
- 2.Degenerative Joint Disease: Risk Factors and How to Diagnose It in Clinic
- 3.Managing Early Osteoarthritis Without Surgery: Lifestyle, Bracing and Medication
- 4.High Tibial Osteotomy and Partial Knee Replacement: Preserving the Joint Before Full Replacement
- 5.Total Knee Replacement for Advanced Osteoarthritis: Indications and Long-Term Survival
- 6.Robotic Joint Replacement: Closing the Gap Between a Working Knee and a Happy Patient
- 7.Complex and Infected Joint Replacement Cases: What a Revision Surgery Actually Involves
- 8.Beyond the Knee: Hip, Shoulder and Elbow Replacement in Degenerative Joint Disease
- 9.The Real Cost of Total Knee Replacement in India