Senior Director, Joint Replacement Programme, BLK-Max Super Speciality Hospital, New Delhi
Part 5 of 9 in Diagnosis & Management of Degenerative Joint Disease
Total Knee Replacement for Advanced Osteoarthritis: Indications and Long-Term Survival
September 6, 2026
By the time arthritis has become diffuse across the whole knee, the joint-preserving options described elsewhere in this series are no longer available, and Dr. Ishwar Bohra told the doctors on his Jivo Healthcare masterclass that total knee replacement becomes the remaining, and usually life-changing, option.
Three signs it is time
Dr. Bohra named three factors that together compel a patient toward total knee replacement: diffuse arthritic change across the joint on X-ray, severe pain, and functional impairment that limits daily activity. Medical management, alignment surgery and the injections described in the non-surgical management article in this series have typically already been tried and exhausted by this stage.
How long a replaced knee lasts
Modern prostheses survive more than 30 years in 90 percent of patients, according to Dr. Bohra, a figure he described as transforming what total knee replacement means for a patient's remaining life expectancy compared with earlier implant generations. For a patient with stage four arthritis and no remaining joint-preserving option, he called it life-transforming surgery rather than a last resort.
What comes after the decision to operate
The technique used to perform that replacement, conventional or robotic-assisted, has a measurable effect on how satisfied the patient is afterward, not just on how well the joint functions. That comparison, and why robotics has become Dr. Bohra's preferred approach for many of these cases, is the subject of the next article in this series.
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. Kobel
Is there a relationship between vitamin D deficiency and osteoarthritis?
Dr. Ishwar Bohra
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.
Frequently Asked Questions
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.
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.
What are the indications for total knee replacement?▼
Diffuse arthritic change across the joint, severe pain, and functional impairment that limits daily activity, once joint-preserving options have been exhausted.
How long do modern knee replacement implants last?▼
More than 30 years in 90 percent of patients, according to Dr. Bohra.
Is total knee replacement only for older patients?▼
No. It is indicated based on the stage and diffuseness of the arthritis and the degree of pain and functional impairment, not age alone.
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