摘要
目的研究膨胀式椎弓根螺钉(expansive pedicle screw,EPS)在骨质疏松绵羊的松质骨内短期的骨-螺钉界面组织学情况。方法3只经去势后骨质疏松的绵羊选取双侧股骨髁,植入EPS,饲养3个月。依次进行切片组织学观察。结果切片经骨粉染色和丽春红三色染色,见新生骨小梁长入膨胀后的螺钉缝隙中,并与EPS周围的骨小梁相延续、延伸至膨胀中心。EPS骨-钉界面及膨胀缝隙中的骨小梁与钉直接紧密无缝隙相接触。结论EPS所形成的骨中有钉、钉中有骨的立体交叉复合结构的诸多优点,说明应用在骨质疏松的状态下具有强大的稳定性。
Objective To investigate the pin-bone interface and expensive section of expansive pedicle screw （EPS） in osteoporotie sheep histologically. Methods Both sides of the condyles of femur from 3 female sheep with ovariectomy-induced osteoporosis were employed in this extxriment. After the EPS was implanted in each condyles of femur,sheep were given 3 months＇ breeding. Microtome seclions were made, stained with gufen and ponceau, and then histological observation was made by microscope. Results Newly formed trabeeula of bone, along the expansive intervals, have crawled into the center of EPS integrated with the bone of the interlace, the bone in the pin-bone interface were in direct contact with the EPS tightly. Conclusions The EPS can significantly provide stabilization in cancellous bone of osteoporosis because of its special lhree-dimensional structure which bone contained pin, as well as pin contained bone.
出处
《中国骨质疏松杂志》
CAS
CSCD
2007年第11期769-772,共4页
Chinese Journal of Osteoporosis
关键词
膨胀式椎弓根螺钉
骨质疏松
骨-螺钉界面
稳定
Expansive pedicle screw（EPS）
Osteoporosis
Pin-bone interface
Stabilization
