胫骨
超声波
股骨
低强度脉冲超声
骨干
骨矿物
医学
长骨
骨愈合
解剖
放射科
外科
骨质疏松症
治疗性超声
内科学
作者
Joseph A. Spadaro,Stephen A. Albanese
标识
DOI:10.1016/s0301-5629(98)00006-4
摘要
Low-intensity pulsed ultrasound recently has been shown to accelerate long bone fracture healing, but its effect on bone growth and development is unknown. The longitudinal growth and bone density of the femur and tibia in young rats was measured after application of an ultrasound transducer emitting 1.5-MHz pulsed ultrasound (30 mW/cm2, SATA) for 20 min/day. After 28 days, no length difference was detected (≤ 2%) compared to the sham-treated leg or to unexposed controls. Also, no significant difference in bone mineral density (BMD) of the femur or tibia was found (≤ 6%). In a repeated experiment in which a periosteal trauma stimulus was created in the femoral diaphysis, the ultrasound also had no effect on growth or BMD. This result suggests that physeal bone growth is far less sensitive to this level of ultrasound application than is fracture repair. This may be related to the cascade of cellular events and regulatory factors that are present after a fracture.
科研通智能强力驱动
Strongly Powered by AbleSci AI