Porous cements can be seen as reasonable alternatives to solid cement and many options based on PMMA 4, 5 and calcium phosphate (CPC) 6 have been reported. 2 The high temperatures reached during cement drying, the decrease in blood supply due to the confinement of the subchondral bone between the articular cartilage and the cement and the elasticity discrepancy between bone and cement are considered causes of the appearance of a radiolucent region around the block and eventually, its failure. 1 Solid PMMA blocks allow immediate load support, but are related to complications such as bone and cartilage necrosis leading to arthrosis, when implanted in the periarticular subchondral region. Other bone substitutes in different cement presentations do not provide immediate mechanical stability and their ability to remodel is not well established in the literature. They are often filled with solid blocks of polymethylmethacrylate (PMMA). ![]() ![]() The curettage of benign bone tumors produce large defects that are at risk of fracture.
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