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Hip prosthesis displaying aseptic loosening (arrows) Hip prosthesis zones according to DeLee and Charnley, [39] and Gruen. [40] These are used to describe the location of for example areas of loosening. On radiography, it is normal to see thin radiolucent areas of less than 2 mm around hip prosthesis components, or between a cement mantle and bone.
Approximately 2% of hip and knee replacements. Prosthetic joint infection (PJI), also known as peri-prosthetic joint infection (PJI), is an acute, sub-acute or chronic infection of a prosthetic joint. It may occur in the period after the joint replacement or many years later. It usually presents as joint pain, erythema (redness of the joint or ...
Osteolysis is an active resorption of bone matrix by osteoclasts and can be interpreted as the reverse of ossification. Although osteoclasts are active during the natural formation of healthy bone the term "osteolysis" specifically refers to a pathological process. Osteolysis often occurs in the proximity of a prosthesis that causes either an ...
When the two metal surfaces rub against one another in the joint, it can create metal ions. Some people have reactions to those ions, which can loosen the implant and cause tissue damage around ...
Purported symptoms of metallosis generally include pain around the site of the implant, pseudotumors (a mass of inflamed cells that resembles a tumor but is actually collected fluids), and a noticeable rash that indicates necrosis. [1] The damaged and inflamed tissue can also contribute to loosening the implant or medical device.
Acute septic arthritis, infectious arthritis, suppurative arthritis, pyogenic arthritis, [4] osteomyelitis, or joint infection is the invasion of a joint by an infectious agent resulting in joint inflammation. Generally speaking, symptoms typically include redness, heat and pain in a single joint associated with a decreased ability to move the ...
After hip replacement, hip prosthesis zones are regions in the interface between prosthesis material and the surrounding bone. These are used as reference regions when describing for example complications including hip prosthesis loosening on medical imaging. Postoperative controls after hip replacement surgery is routinely done by projectional ...
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 ...