The air pouches were injected with 3 mL alumina particles suspension into the alumina particle group,while 3 mL HMWPE particles suspension was injected in the HMWPE particle group; the control group was given matching phosphate buffered saline.

• 氧化铝陶瓷磨损颗粒组向air-pouch内注射经超声分散后的氧化铝陶瓷磨损颗粒悬液3mL,高分子聚乙烯磨损颗粒组注射高分子聚乙烯磨损颗粒悬液3mL,模型对照组注射等量磷酸盐缓冲盐水。