Total Knee Replacement
Total Knee Replacement is a surgical procedure in which a damaged or worn-out knee joint is replaced with an artificial implant (prosthesis).
The surgery is commonly performed to relieve severe pain, restore joint function, and improve mobility in patients whose knee joints are severely affected by conditions such as Osteoarthritis, Rheumatoid Arthritis, or Post‑Traumatic Arthritis.
The surgery is commonly performed to relieve severe pain, restore joint function, and improve mobility in patients whose knee joints are severely affected by conditions such as Osteoarthritis, Rheumatoid Arthritis, or Post‑Traumatic Arthritis.
What is Total Knee Replacement (TKR)
Total Knee Replacement is a surgical procedure in which a damaged or worn-out knee joint is replaced with an artificial implant (prosthesis). The surgery is commonly performed to relieve severe pain, restore joint function, and improve mobility in patients whose knee joints are severely affected by conditions such as Osteoarthritis, Rheumatoid Arthritis, or Post‑Traumatic Arthritis.
During the procedure, the damaged cartilage and bone from the femur (thigh bone), tibia (shin bone), and sometimes the patella (kneecap) are removed and replaced with specially designed metal and plastic components that mimic the natural knee joint.
Types of Total Knee Replacement
- Cemented TKR
- Cementless TKR
- Hybrid TKR
- Minimally Invasive TKR
1. Cemented Total Knee Replacement
In this technique, a special surgical bone cement is used to fix the artificial implant firmly to the bone.
Key Features
- Most commonly used method worldwide
- Provides immediate strong fixation
- Suitable for older patients or those with weaker bone quality
Advantages
- Reliable stability
- Faster weight-bearing after surgery
- Long track record of success
2. Cementless Total Knee Replacement
In cementless replacement, the implant is designed with a porous surface that allows the patient’s bone to grow into the implant, creating natural fixation.
Key Features
- No surgical cement used
- Bone grows into implant surface
- Designed for younger or active patients
Advantages
- Biological fixation
- Potential for longer implant lifespan
- Reduced risk of cement-related loosening
3. Hybrid Total Knee Replacement
Hybrid knee replacement combines both cemented and cementless techniques.
Key Features
- One component fixed with cement
- Another component designed for bone ingrowth
Advantages
- Balanced fixation
- Combines stability with biological integration
4. Minimally Invasive Total Knee Replacement
This approach uses smaller surgical incisions and specialized instruments to perform the knee replacement.
Key Features
- Smaller incision
- Less muscle disruption
- Faster rehabilitation
Advantages
- Reduced pain after surgery
- Shorter hospital stay
- Faster recovery
Conditions That May Require Total Knee Replacement
Patients may need knee replacement when conservative treatments fail.
Common conditions include:
- Severe Osteoarthritis
- Advanced Rheumatoid Arthritis
- Post‑Traumatic Arthritis after fractures or injuries
- Severe knee deformity (bow legs or knock knees)
- Chronic knee pain and stiffness
Symptoms Indicating the Need for Knee Replacement
- Persistent knee pain even at rest
- Difficulty walking or climbing stairs
- Severe stiffness and reduced range of motion
- Swelling and inflammation in the knee joint
- Poor response to medications or physiotherapy
Benefits of Total Knee Replacement
- Significant pain relief
- Improved mobility and walking ability
- Better joint alignment
- Improved quality of life
- Return to normal daily activities
Modern Technologies Used in Knee Replacement
Advancements in orthopedic surgery have improved surgical outcomes.
Modern techniques include:
- Robotic‑Assisted Knee Replacement
- Computer‑Navigated Knee Replacement
- Patient‑Specific Knee Implants
- 3D‑Printed Knee Implants
These technologies help surgeons achieve better accuracy, alignment, and implant longevity.
When to See an Orthopedic Surgeon
You should consult an orthopedic specialist if you experience:
- Persistent knee pain affecting daily activities
- Knee stiffness and swelling
- Difficulty walking or standing for long periods
- Reduced quality of life due to knee problems
Early evaluation and treatment can prevent further joint damage and improve surgical outcomes.