Low-intensity pulsed ultrasound (LIPUS) may prevent polyethylene induced periprosthetic osteolysis in vivo.
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.
Department of Orthopedic Surgery, The Second Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, China.
Xiang
X
Zhao
Xun-Zi
XZ
Cai
Zhong-Li
ZL
Shi
Fang-Bing
FB
Zhu
Gang-Sheng
GS
Zhao
Shi-Gui
SG
Yan
D000818:Animals; D001672:Biocompatible Materials / Q000009:adverse effects*; D010014:Osteolysis / Q000209:etiology* / Q000517:prevention & control*; D020959:Polyethylene / Q000009:adverse effects*; D019736:Prostheses and Implants / Q000009:adverse effects*; D011817:Rabbits; D016896:Treatment Outcome; D014464:Ultrasonic Therapy / Q000379:methods*
D001672:Biocompatible Materials; D020959:Polyethylene