期刊
ULTRASOUND IN MEDICINE AND BIOLOGY
卷 38, 期 2, 页码 238-246出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ultrasmedbio.2011.11.005
关键词
Osteolysis; Polyethylene; Low-intensity pulsed ultrasound
资金
- National Natural Science Foundation of China [81101377, 81171687, 30872643, 81101345]
- Zhejiang Provincial Natural Science Foundation of China [Y2100161, Y2090283, Y2110239, 2010kya105, 2011c13033]
- Zhejiang Provincial Education Department [Y201018936]
We investigated the effect of local low-intensity pulsed ultrasound (LIPUS) on polyethylene debris induced periprosthetic osteolysis. The periprosthetic osteolysis model was made by injecting endotoxin-free pure polyethylene particles into the distal part of the femur canal and inserting a stainless steel plug into this femur. The effects of polyethylene and LIPUS were assessed histologically and by the shear strength test and periprosthetic bone mineral density (BMD) test. Sixteen rabbits received a stainless steel plug on one side and both polyethylene and a stainless steel plug on the other side. Three months later, the side that received polyethylene showed periprosthetic osteolysis. Subsequently, another 16 rabbits received polyethylene plus local LIPUS (200 mW/cm(2) for 20 min daily) on one side and polyethylene alone on the other side. Three months later, LIPUS effectively prevented the periprosthetic osteolysis caused by polyethylene in this rabbit model. (E-mail: flyingzhao@zju.edu.cn) (C) 2012 World Federation for Ultrasound in Medicine & Biology.
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