When the knee joint is affected by aging, arthritis, or injury, simple daily tasks like walking, standing, or climbing stairs may become painful and challenging. In the early stages, doctors often suggest non-surgical treatments such as medications, physiotherapy, maintaining a healthy weight, and lifestyle modifications to help relieve pain and improve joint mobility.
However, when the joint damage becomes severe and these treatments no longer provide relief, knee replacement surgery may be recommended. The procedure removes the damaged joint surfaces and replaces them with artificial implants that restore movement and function.
The primary goal of the surgery is to reduce pain, improve mobility, and help patients return to their daily activities with greater comfort and stability.
Expert Orthopaedic Surgeons
- Madan Mohan Reddy – Orthopaedician & Spine Surgeon with 36+ years of experience (MBBS, MS Ortho., MD Orthopaedics, FRCS)
- Dr. Omer Sheriff – Orthopaedic Surgeon (MBBS, D.Ortho, MS Orthopaedics, Fellowship in Joint Replacement)
- Vijay Kumar Sohanlal – Orthopaedic & Joint Replacement Surgeon, Chennai
- Dr. Bharath Loganathan (Dr. L. Bharath) – Specialist in knee and hip replacement, arthroscopy, sports injuries, and complex joint reconstruction
- Dr. Karthik P. Reddy – Specialist in Orthopaedics and Joint Replacement Surgery
What is Knee Replacement Surgery?
Knee Replacement Surgery, also called Total Knee Replacement (TKR) or Knee Arthroplasty, is a surgical procedure used to replace damaged cartilage and bone in the knee joint with artificial components known as prostheses.
The knee joint consists of three main bones:
- Femur – Thigh bone
- Tibia – Shin bone
- Patella – Kneecap
The ends of these bones are covered with cartilage, a smooth tissue that allows the bones to move easily without friction. When this cartilage becomes worn out or damaged, the bones may rub against each other, causing pain, swelling, and stiffness.
During the surgery, the orthopedic surgeon removes the damaged cartilage and small portions of bone. Artificial implants are then placed to recreate the natural movement of the knee joint.
Modern implants are designed to provide long-lasting durability and smooth joint motion, helping patients regain mobility and improve their quality of life.
Why Knee Replacement Surgery is Needed
Doctors usually recommend knee replacement surgery when severe knee pain continues even after other treatments. Chronic knee problems can make everyday movements difficult and reduce overall quality of life.
Several medical conditions can result in severe knee damage and may require knee replacement surgery.
Osteoarthritis
The most common reason for knee replacement. It occurs when cartilage gradually wears down due to aging and joint wear.
Rheumatoid Arthritis
An autoimmune disease that causes joint inflammation, pain, and long-term damage.
Post-Traumatic Arthritis
Arthritis that develops after serious injuries such as fractures or ligament tears.
Severe Knee Injury
Major injuries can damage cartilage and bones, leading to long-term knee problems.
Knee Deformities
Conditions such as bow legs or knock knees can create uneven pressure on the knee joint.
Chronic Knee Pain
Persistent knee pain that affects walking, sleeping, or climbing stairs.
When knee pain significantly affects mobility and daily activities, surgery may be the most effective treatment option.
Types of Knee Replacement Surgery
Total Knee Replacement (TKR)
This is the most commonly performed procedure. The entire knee joint is replaced with artificial implants and is usually recommended for patients with severe arthritis.
Partial Knee Replacement (PKR)
The surgeon creates a small cut at the front of the knee to reach the joint.. This procedure is suitable when arthritis affects only one section of the knee.
Minimally Invasive Knee Replacement
This advanced technique uses smaller incisions and specialized instruments. Benefits may include:
- Smaller surgical cuts
- Less tissue damage
- Reduced post-operative pain
- Faster recovery
- Revision Knee Replacement
Revision surgery is performed when a previously implanted artificial knee becomes loose, worn out, or damaged and needs replacement.
Knee Replacement Surgery Procedure
Knee replacement surgery is typically performed in a hospital by an experienced orthopedic surgeon and usually takes 1 to 2 hours.
- Anesthesia
Patients are given either general anesthesia or spinal anesthesia to prevent pain during surgery.
- Surgical Incision
The surgeon creates a small cut at the front of the knee to reach the joint.
- Removal of Damaged Tissue
Damaged cartilage and small portions of bone are removed from the femur and tibia.
- Implant Placement
Artificial metal components are attached to the bone surfaces, and a plastic spacer is inserted between them to allow smooth joint movement.
- Resurfacing the Kneecap
In some cases, the underside of the kneecap is replaced with a plastic component.
- Closing the Incision
The incision is closed with stitches or surgical staples and covered with a sterile dressing.
After surgery, the patient is moved to a recovery area where medical staff monitor their condition.
Benefits of Knee Replacement Surgery
Knee replacement surgery can greatly improve the quality of life for people suffering from severe knee problems.
Key benefits include:
- Relief from chronic knee pain
- Improved flexibility and mobility
- Ability to walk longer distances
- Easier stair climbing
- Better joint stability
- Correction of knee deformities
- Improved ability to perform daily tasks
- Enhanced overall quality of life
Most patients experience significant improvement after completing the rehabilitation process.
Recovery After Knee Replacement Surgery
Recovery is a critical part of successful knee replacement treatment. Patients typically stay in the hospital for a few days after surgery.
Physical therapy is essential because it helps strengthen the muscles around the knee and restore flexibility.
Typical Recovery Timeline
First Few Days
Gentle movements begin
Assisted walking may start
Walker or crutches may be used
3 to 6 Weeks
Light daily activities can usually resume
Walking becomes easier
6 to 12 Weeks
Strength and joint mobility improve
Physiotherapy exercises continue
Risks of Knee Replacement Surgery
Although knee replacement surgery is considered safe and highly successful, certain risks may occur.
Possible complications include:
- Infection
- Blood clots
- Implant loosening over time
- Knee stiffness
- Nerve or blood vessel injury
- Persistent pain in rare cases
- Choosing an experienced surgeon and following post-surgery instructions can significantly reduce these risks.
Conclusion
Knee Replacement Surgery is an effective treatment for individuals suffering from severe knee joint damage and long-term knee pain. When other treatments no longer provide relief, this procedure can restore mobility and significantly improve quality of life.
Advances in surgical techniques and implant technology have made knee replacement safer and more successful for many patients. With proper medical care, rehabilitation, and regular physiotherapy, most individuals can return to their daily routines and maintain healthy joint function.
Medaura Healthcare is committed to providing reliable medical information and connecting patients with experienced specialists, helping individuals make informed decisions about knee replacement surgery and other orthopedic treatments.
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