A cement impactor for uniform cement penetration in the upper tibia.

A cement impactor achieved adequate and uniform cement penetration consistently on the upper tibial surface. The penetration obtained, from 2.5 to 5.5 mm in all areas, is within the range of penetration found desirable by previous studies. Unlike most other methods, this technique is simple and achieves good penetration in peripheral areas, which have been shown to be the earliest and most frequent sites of radiolucency at the bone-cement interface.