Methylmethacrylate, an acrylic plastic used in dentistry, has recently been adapted as a cement in bone surgery. It has proved to be useful in implant surgery and total joint replacement, in malignant neoplastic fractures, and in the fixation of pins and screws in bone. However, problems such as recurring infections, thermal necrosis of tissue, depression of myocardial and hepatic function, and leakage of monomer may occur with the use of methylmethacrylate.