What is aseptic osteolysis?
Aseptic loosening refers to the failure of joint prostheses without the presence of mechanical cause or infection. It is often associated with osteolysis (bone resorption) and an inflammatory cellular response within the joint.
What causes aseptic loosening of hip?
Aseptic loosening can occur as a result of inadequate initial fixation, mechanical loss of fixation over time, or a biological loss of fixation caused by particle-induced osteolysis surrounding the implant.
What causes aseptic loosening?
Aseptic loosening can be the result of inadequate initial fixation, mechanical loss of fixation over time, or biologic loss of fixation caused by particle-induced osteolysis around the implant.
What is periprosthetic lucency?
Periprosthetic lucencies 15) is a biological process that is initiated by macrophage phagocytosis of particulate debris, causing an aseptic foreign body granulomatosis [18]. The implant becomes separated from the host bone, resulting in mechanical (aseptic) loosening.
What are symptoms of aseptic loosening?
The First Symptom: Chronic Pain Pain in the joint is the first sign of loosening, whether due to bacterial infection or bone cement failure. This pain may be accompanied by swelling. It may be localized in one particular area, or be felt all over the knee.
What is particle disease?
Particle disease is a rare lesion that results from an inflammatory response due to wear debris-induced osteolysis following arthroplasty. Particles resulting from the wear debris cause macrophage activation and phagocytosis. Particle disease often leads to joint loosening and implant failure.
What is stress shielding effect?
Stress shielding refers to the reduction in bone density (osteopenia) as a result of removal of typical stress from the bone by an implant (for instance, the femoral component of a hip prosthesis).
What does Metallosis mean?
Metallosis is a blood poisoning condition that develops when there are high levels of toxic metals in the blood. It is reputed to occur when metal particles shed from metal hip implants or other joint replacement devices are released into the bloodstream and tissue surrounding the implant.
What is particle disease Radiology?
Particle disease refers to the reaction that occurs in response to small particles of debris that are released due to wear of arthroplasty components. In hip arthroplasty patients, this reaction can occur due to particles of metal, polyethylene, and/or cement.
What are the signs and symptoms of acro-osteolysis?
The most prevalent symptom is pain in the fingers or toes. If there is associated digital ischemia, there can also be color change or breaks in the skin. X-rays are the standard method used to diagnose acro-osteolysis. Treatment for acro-osteolysis mainly relates to treating the underlying condition.
What are the symptoms of osteoarthritis (OA)?
Key symptoms of this condition include: 1 sharp pain in the AC joint or collarbone during activity 2 continued dull aching or tenderness of these same areas during inactivity 3 inflammation (swelling) in the shoulder or collarbone area More
What are the indications for revision surgery for osteolytic lesions?
Signs of large lytic lesions, significant progression, or loose implants are the indications for revision surgery (even in the absence of symptoms). clinical correlate: Plain x-rays typically underestimate the size of osteolytic lesions, with lytic lesion only visible on x-ray once 20-30% of acetabular bone loss has occurred [9] .
What are the signs and symptoms of Distal clavicular osteolysis?
Distal clavicular osteolysis tends to progress rather slowly and starts with dull pain, tenderness, or stiffness in the shoulder that worsens over time. The pain typically presents in the anterior region of the shoulder at the AC joint, and becomes worse with activities that involve heavy lifting, pushing, or throwing.