Your contact partners
in this area:
Prof. <br /> Dr. med. habil.<br /> Georg Matziolis
Dr. med. habil.
Georg Matziolis

Senior Consultant of the Clinic for Orthopaedics and Accident Surgery

Acting holder of the Chair for Orthopaedics of the FSU Jena at the Waldkrankenhaus Eisenberg

036691 8-1002

Types of knee joint endoprosthetic

The artificial knee joint

Depending on the previous degree of damage to the knee joint, various types of endoprosthetics are used today.  Our doctors provide the patient with detailed information on the various systems and recommend the best replacement joint for the individual needs of the patient.

The prosthetic parts consist of a femur and tibia implant made of metal (CoCr alloy or CoCr alloy with titanium nitrite coating for allergy sufferers). Between these components, a plastic sliding bearing (polyethylene) is inserted, which prevents a high level of friction between the metal components.

Various types of endoprosthetics:
The sliding endoprosthetic
Partial replacement

If only one side/part of the joint is damaged and all knee joint ligaments are still preserved, a partial prosthetic is implanted only on the inside or outside of the knee joint (sliding endoprosthetic, unicondylar endoprosthetic). The advantage: the healthy areas of the knee and also the cruciate ligaments are preserved.

In a few cases of an isolated arthrosis of the kneecap (patella), only the cartilage between the kneecap and the  thigh (femur) can be replaced (kneecap prosthetic).

Total endoprosthetic
Uncoupled bicondylar surface prosthetic

If the complete knee joint is diseased, a surface prosthetic is used: here the surgeons replace the complete surface of the femur and tibia.

The collateral ligaments must be intact and are protected. The kneecap remains intact, only the back can be replaced if necessary.

Total endoprosthetic
Coupled and modular endoprosthetics

In the case of instability of the collateral and cruciate ligaments, prosthetics of various types of coupling between the femur and tibia implant are used. With different lengths and freely selectable shaft extensions, the stability of the knee joint can also be restored in the case of bone defects.

These modular endoprosthetics allow individual adaptation of the prosthetic to the needs of the patient: the individual components can be combined with each other depending on requirements. These prosthetics are inserted in the case of serious joint destruction or in the case of replacement operations as a revision prosthetic.

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The prosthetic normally consists of metal and a plastic sliding bearing.

The prosthetic normally consists of metal and a plastic sliding bearing.

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