Presumed chronic material-related osteolysis
x-ray - Progressive osteopenia and lucency around tip of tibial screw. CT - lytic bone changes at the tibial prosthesis with a medial cortical defect. MR - cystic bone lesions at the tibial arthroplasty component extend out of the bone through a small defect. No surrounding marrow or soft tissue edema at this level.
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Arthroplasty with pretibial leg ulcer at the distal calf
Courtesy Andrei Dumitrescu, MD
