Comparison of Two Pressurisers for Cementation of the Proximal Femur

Abstract

Purpose. To compare pressures generated by 2 different cement pressurisers at various locations in the proximal femur. Methods. Two groups of 5 synthetic femurs were used, and 6 pressure sensors were placed in the femur at 20-mm intervals proximally to distally. Cement was filled into the femoral canal retrogradely using a cement gun with either the half-moon pressuriser or the femoral canal pressuriser. Maximum pressures and pressure time integrals (cumulative pressure over time) of the 2 pressurisers were compared. Results. At all sensors, the half-moon pressuriser produced higher maximum pressures and pressure time integrals than the femoral canal pressuriser, but the difference was significant only at sensor 1 (proximal femur). This may result in reduced cement interdigitation in the proximal femur. Conclusion. The half-moon pressuriser produced higher maximum cementation pressures and pressure time integrals than the femoral canal pressuriser Surgery 2014;22(2):163-7 in the proximal femur region, which is critical for rotational stability of the implant and prevention of implant fracture. Journal of Orthopaedic