Bone cement oscillator can increase binding of bone-cement interface

Abstract

Objective To evaluate effect of the bone cement oscillator on binding of the bone ce-ment-bone interface. Methods Sixteen femurs of adult pigs were divided into 2 equal groups at random:oscillating group (A) and non-oscillating group (B) as the control. After cement perfusion and oscillation treatment, 3 slices were sectioned from each femur specimen at the same intervals. The slices were stained with HE for observation of their fine structures under stereomicroscope. Penetration of bone cement into the bone trabeeula was analyzed by Motic Med 6. 0 software to compare the effect of oscillation between the 2groups. Results Stereomicroscopy revealed that cement bound closely with bone trabeeula at the interface and the bone cement was evenly distributed in the cancellous cavity in group A. In the control group, how-ever, the binding of bone cement with bone trabeeula was loose and the filling of cement in the cancellous cavity was uneven and discontinuous. Penetration of cement into bone interface was significantly deeper in the oscillating group than in the control group ( P ＜ 0.05) . Conclusion The bone cement oscillator can significantly increase binding of bone-cement interface. Key words: Boncement ; Oscillator; Interface