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John Charnley is recognised as the founder of modern hip replacement. His contributions to the field are found in the hip replacement surgery method, in the optimization of the surgery flows and in the drastic infection rate decrease.
Hip replacement is a surgical procedure in which the hip joint is replaced by a prosthetic implant, that is, a hip prosthesis. Hip replacement surgery can be performed as a total replacement or a hemi/semi(half) replacement.
The 5-year mortality after hip PJIs is 21%, which is 4 times that of age adjusted controls. And the 10 year mortality after hip PJIs was 45%, as compared to 29% in people with non-infected hip replacements.
Hip replacement implants can fail. Outcomes are normally recorded in a joint replacement registry to ensure patterns are picked up upon. In 2013 Johnson & Johnson shared documents which indicated that 40% of a class of hip replacement implants which it manufactured had failed.
DePuy identified reasons for the failure of the hip replacement system as component loosening, component malalignment, infection, fracture of the bone, dislocation, metal sensitivity and pain. Additional complications from the hip replacement system may include increased metal ion levels in the blood, bone staining, necrosis , swelling , nerve ...
In August 2010, DePuy recalled its hip replacement systems ASR XL Acetabular Hip Replacement System and ASR Hip Resurfacing System due to failure rates and side effects including metallosis. The recalls triggered a large number of lawsuits against DePuy and its parent company Johnson & Johnson upon claims that the companies knew about the ...
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