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Tibial piece is separated from the femur. Is rare. Much more common is the instability, insufficiency of the ligaments of the knee and wear of the prosthesis makes the fitting of the components may occur and abnormal movements.

Deep vein thrombosis

involves the formation of clots in deep veins of the legs (although prophylaxis may appear). The risk is that thrombi are dislodged and migrate as the “rams” into the lungs, causing pulmonary embolism.

Fat embolism or by cement

by drilling the bone to implant the prosthesis can be formed small fat emboli from bone marrow (the “marrow” of the bone), which will go to the lung. In the cemented prosthesis cement can also embolize.Nerve injuries

by section to clean the joint and make the bone cuts required to implant the prosthesis, or traction to separate the tissues for the surgeon to look good. Within its rarity it is most common injury to the sciatic or peroneal nerve. It is usually more common in parts of prostheses because the previous scar obscures well structures.

Artery lesions

The same happens with the arteries. In the parts may be injured more often the popliteal artery or one of its branches.

The fracture of the femur or tibia in the area of ​​the prosthesis.

It is favored when the bone is osteoporosis. Usually requires at least one operation osteosynthesis (fixation of the fracture fragments). Sometimes you have to slough the prosthesis.

Calcification around the prosthesis

Sometimes they are very bulky and impede the mobility of the knee, indicating surgical removal when growth has stopped (calcification in inactive phase). Can be prevented by taking certain anti-inflammatory drugs for months, provided that no gastrointestinal lesions appear for their use.

credit to: Dr. Alain Vannineuse, Dr. Roberto Palacio González