In order to study systematically suitability of radiation sterilization of medical operation table cover,microbiological quantitative examination method,dye seepage test,accelerating ageing test and seal stripping test were used to examine the recovery rate of original contaminating bacteria,correctio factor and packing properties.

Objective To explore the relationship between the infection rate and the style of operative incision and infection-risky factors.

Objective To compare the effect of anterior and transtrochanteric surgical approaches in primary total hip arthroplasty.