Why do Knee Replacements Fail ? (Revision Knee Replacements)
The commonest reasons why a Replacement might fail are, Polyethylene wear (Plastic), Osteolysis (loss of bone around the implant), aseptic loosening of the implant, loosening due to infection, loss of stability of the implant, Fractures (peri-prosthetic) around the implant and extensor mechanism ( inability to straighten the knee). Often more than one reason may be a cause for the failure.
Ligament laxity, Inappropriate balancing of the knee, are some of the reasons for instability. inattention to sterile techniques. wound problems after the Knee Replacement, poor nutrition of the patient, conditions like Diabetes, Rheumatoid Arthritis and Obesity are some of the risk factors. As for aseptic loosening, cementless implants may fail early due to aseptic loosening than cemented implants, where they fail late. Patellofemoral problems and Arthrofibrosis (stiffness) are some of the reasons, needing revision.
The commonest reasons why a Replacement might fail are, Polyethylene wear (Plastic), Osteolysis (loss of bone around the implant), aseptic loosening of the implant, loosening due to infection, loss of stability of the implant, Fractures (peri-prosthetic) around the implant and extensor mechanism ( inability to straighten the knee). Often more than one reason may be a cause for the failure.
Ligament laxity, Inappropriate balancing of the knee, are some of the reasons for instability. inattention to sterile techniques. wound problems after the Knee Replacement, poor nutrition of the patient, conditions like Diabetes, Rheumatoid Arthritis and Obesity are some of the risk factors. As for aseptic loosening, cementless implants may fail early due to aseptic loosening than cemented implants, where they fail late. Patellofemoral problems and Arthrofibrosis (stiffness) are some of the reasons, needing revision.
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