Effects of point contact-dynamic compression plate on cortical bone blood flow in adult goats / 中华创伤杂志

ABSTRACT

Objective To compare the effects of point contact-dynamic compression plates (PC-DCP) and dynamic compression plates (DCP) on cortical bone blood flow in an intact sheep tibia model. Methods Fifteen mature goats were used in this experiment. After the bilateral tibia of goats were fixed with DCP and PC-DCP respectively, the regional cortical bone blood flow was measured at four time intervals (1 day, 2, 6 and 12 weeks after operation) using radiolabelled microsphere technique. Results After operation, the cortical bone blood flow was acutely decreased at the first day, kept lower than normal level until six weeks and recovered at the 12th week. The blood supply under PC-DCP recovered to normal, even over normal level two weeks after operation and remained at a high level until 12 weeks. Conclusions PC-DCP can markedly protect cortical bone blood flow.