A new femoral cement restrictor.

Abstract

The authors report on the clinical trial of a new femoral cement restrictor for use during hip arthroplasty. Instrumentation and technique are described. The restrictor has three components made of high-density polyethylene that fit one inside the other and is available in small, medium, and large sizes. The advantages of this new restrictor are ease of use and secure fixation in the femoral canal when deployed. Because of its inherent strength and design, small particles do not break off during insertion. The apex of the restrictor points proximally and is cupped. This helps in centralizing the stem. It also assists in obtaining good cement pressurization as it does not distally migrate in the femoral canal when pressurization is attempted. Also, no cement escapes distally beyond it. Furthermore, should revision surgery be required, the restrictor can be easily removed without the need for windowing the femoral cortex.