The standard surgical technique for TKA involves cleaning the bone surfaces with pulsed saline lavage prior to cementation and prosthesis insertion. The CarboJet Assisted technique utilizes carbon dioxide lavage to clean and dry the femur canal and bone surfaces prior to cementation and implantation. Because it removes fat globules and marrow particulates from the bone surfaces, it is hypothesized that the use of a carbon dioxide lavage technique in TKA will result in fewer thromboembolic events and increased cement penetration compared with the standard technique using pulsed saline lavage. Cement penetration affects the strength of the bone-cement interface and, therefore, contributes to implant longevity.