Total knee replacement (TKR)

Replacement of the worn joint surfaces of the knee with a custom-fitted implant, to relieve pain durably and restore walking.

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What is it?

Total knee replacement consists of replacing the damaged joint surfaces of the knee with metal implants and a polyethylene insert that reproduce the natural function of the joint. It is indicated when knee osteoarthritis has become too painful and disabling despite medical treatments, injections and rehabilitation. The operation is carefully planned from X-rays and, if needed, additional imaging, in order to precisely adapt the size and positioning of the implants to each patient's anatomy. The goal is to restore correct limb alignment, perfect stability and a comfortable range of motion. Rehabilitation begins within the first few days: the patient gets up and walks quickly with the help of the physiotherapist, then follows a progressive program of strengthening and recovery of joint range of motion. At Clinique Pasteur Tunis, this procedure is performed under optimal safety conditions, with an enhanced recovery protocol, effective management of post-operative pain and personalized rehabilitation support.

When is it indicated?

Advanced and painful knee osteoarthritis

When the knee cartilage is severely worn, the pain becomes almost constant and interferes with walking as well as rest. The prosthesis replaces the damaged surfaces and eliminates this pain.

Failure of medical treatments and injections

When medication, injections and rehabilitation are no longer enough to relieve the knee, prosthetic surgery becomes the lasting solution to regain an active life.

Progressive deformity of the knee (bow-legged or knock-kneed)

Uneven wear of the knee can cause it to deviate inward or outward, which worsens the pain. The prosthesis corrects this deformity and realigns the leg.

Inflammatory rheumatic diseases destroying the joint

Certain inflammatory diseases attack the cartilage and progressively destroy the knee. The prosthesis restores a stable, pain-free joint.

Sequelae of articular fractures of the knee

A fracture involving the joint surface can leave an irregular knee that wears out faster. The prosthesis restores a smooth, functional joint.

Major difficulty walking and in daily activities

When getting around, climbing stairs or simply standing becomes an ordeal, the operation aims to restore independence and comfort in everyday life.

Preparation

1Complete radiographic work-up and surgical planning

2Pre-operative anesthesia consultation

3Laboratory work-up and screening for sources of infection

4Pre-operative muscle strengthening sometimes recommended

5Fast for 6 hours before the operation

Procedure

General anesthesia or spinal anesthesia, often supplemented by regional anesthesia for pain relief

Incision at the front of the knee and exposure of the joint

Precise bone cuts prepared according to the planning

Placement of the femoral and tibial implants and the insert

Check of the stability, alignment and range of motion of the knee

Closure, dressing and transfer to the recovery room

Icing, pain-relief treatment and early first mobilization

Duration

1 to 2 hours

Aftercare & Recovery

Walking resumes within the first few days with crutches, then without assistance over the following weeks. The osteoarthritic pain gradually disappears and knee flexion is recovered through rehabilitation. Most patients regain fluid walking, stair climbing and moderate leisure activities.

Risks and side effects

Joint stiffness, prevented by early and regular rehabilitation

Risk of deep vein thrombosis, limited by early mobilization and preventive anticoagulants

Infection, exceptional thanks to rigorous asepsis protocols

Long-term wear of the implant, monitored by regular radiological follow-up

These risks remain rare. Your surgeon will inform you in detail before the procedure.

Request a Quote

Request a Quote +216 36 402 000

At a glance

Duration: 1 to 2 hours

Preparation: Required

Dedicated specialist team

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