Total Knee Replacement

Total knee replacement (TKR), also known as knee arthroplasty, is a surgical procedure performed to replace a damaged or worn-out knee joint with an artificial implant. This procedure is recommended for individuals suffering from severe knee pain, stiffness, and mobility issues due to conditions like osteoarthritis or injury. Knee replacement helps restore functionality, reduce pain, and improve quality of life.

 

Total knee replacement involves removing the damaged cartilage and bone from the knee joint and replacing them with metal and plastic components that function like a healthy knee. The procedure is performed under spinal or general anesthesia and typically takes 1 to 2 hours.

The artificial knee consists of:

• Metal femoral (thigh bone) component
• Plastic tibial (shin bone) component
• Plastic spacer for smooth movement

Depending on the patient's condition, the surgeon may perform:

• Total knee replacement (entire joint replaced).
• Partial knee replacement (only one part of the knee is replaced).

Symptoms and Causes of Knee Joint Damage

Symptoms Indicating the Need for Knee Replacement

• Chronic knee pain that worsens over time.
• Stiffness and swelling in the knee joint.
• Difficulty walking, climbing stairs, or standing for long periods.
• Grinding or clicking sounds from the knee.
• Knee deformity (bowing in or out).
• Reduced range of motion, making daily activities difficult.
• Persistent pain even with medications and physical therapy.

Causes of Knee Joint Damage

• Osteoarthritis (most common cause) – wear and tear of the knee joint over time.
• Rheumatoid arthritis – an autoimmune condition causing joint inflammation.
• Post-traumatic arthritis – resulting from injuries such as fractures or ligament tears.
• Knee joint infections, leading to cartilage deterioration.
• Genetic factors, as some individuals are predisposed to joint problems.

Diagnosis and Evaluation

To determine if knee replacement is necessary, a doctor will:

• Conduct a physical examination to assess knee function and movement.
• Review the patient’s medical history and symptoms.
• Order imaging tests such as X-rays, MRI, or CT scans to evaluate joint damage.
• Assess the patient’s response to previous treatments like pain medications and physical therapy.

Treatment Options for Knee Pain

Non-Surgical Treatments (Tried Before Surgery)

• Physical therapy to strengthen muscles and improve knee mobility.
• Pain medications (NSAIDs, corticosteroid injections).
• Weight management to reduce stress on the knee joint.
• Knee braces and supportive devices to improve stability.

Total Knee Replacement Surgery (When Other Treatments Fail)

• The damaged joint is removed and replaced with an artificial implant.
• The procedure restores movement and function.
• Requires post-surgical rehabilitation and physical therapy for optimal recovery.

Post-Surgery Recovery and Rehabilitation

• Hospital stay of 1-3 days, depending on progress.
• Physical therapy starts within 24 hours to restore knee function.
• Pain management with medications.
• Full recovery takes 3-6 months, with gradual improvement.
• Patients regain mobility and resume daily activities after rehabilitation.

Conclusion

Total knee replacement is a highly effective procedure for individuals suffering from chronic knee pain and mobility issues. By removing the damaged joint and replacing it with an artificial implant, patients experience significant pain relief, restored function, and improved quality of life. With proper rehabilitation and care, most patients regain independence and mobility, allowing them to return to an active lifestyle.