"A: medullary canal completely filled with cement"
"B: a slight radiolucency exists at the bone cement interface"
"C: radiolucency >50% of bone cement interface"
"D: radiolucency involving 100% of the interface between bone and cement in any projection, including absence of cement distal to the stem tip"
"Primary vs revision "
"See also "
"A: medullary canal completely filled with cement"
"B: a slight radiolucency exists at the bone cement interface"
"DeLee & Charnley and Gruen zones"
"When the prosthesis fails, a revision THA is performed which involves removing the primary components. This may involve osteotomy of the femur, which requires internal fixation. There are many options for revision prosthesis including longer femoral stem."
Expected headings
"Indications"
"Surgical approaches"
"Prosthesis design"
"Prosthesis position"
"Prosthesis fixation"
"Primary vs revision "
"Complications"
"See also "
"Femoral stem fixation can be either cemented or non-cemented (biological) fixation. There is a tendency to use non-cemented femoral stems in younger patients, due to higher reported rates of loosening of cemented stems in long term follow-up. Most common fixation for the acetabular component is non-cemented."
"DeLee & Charnley zones are around the acetabular component. There are 3 zones indicating the superior, middle, and inferior third of the acetabulum."
"When the prosthesis fails, a revision THA is performed which involves removing the primary components. This may involve osteotomy of the femur, which requires internal fixation. There are many options for revision prosthesis including longer femoral stem."