犬不稳定骨折模型中多孔钛表面与标准光滑表面接骨板及螺钉的比较。

Comparison of porous titanium-surfaced and standard smooth-surfaced bone plates and screws in an unstable fracture model in dogs.

作者信息

Orton E C, Polher O, Shenk R, Hohn R B

出版信息

Am J Vet Res. 1986 Mar;47(3):677-82.

Abstract

Bilateral midshaft femoral osteotomies were fixed with a 3-mm fracture gap in 6 dogs. In each dog, one femur was fixed with a porous titanium-surfaced bone plate and screws, whereas the opposite femur was fixed with a standard smooth-surfaced bone plate and screws. The mean removal torque for porous titanium-surfaced screws (32.3 kg X cm) was significantly (P less than 0.01) greater than the mean removal torque for standard screws (4.4 kg X cm). Osseous tissue ingrowth into the surface of porous titanium-surfaced screws was verified by histologic examination of the bone-screw interface. Radiographic and histologic examinations of the osteotomy gaps showed accelerated primary gap healing in osteotomies fixed with porous titanium-coated implants, compared with slower callus healing seen in osteotomies fixed with standard smooth-surfaced implants.

摘要

对6只犬进行双侧股骨干中段截骨术，截骨间隙为3毫米。每只犬的一侧股骨用多孔钛表面骨板和螺钉固定，而另一侧股骨用标准光滑表面骨板和螺钉固定。多孔钛表面螺钉的平均取出扭矩（32.3千克×厘米）显著高于标准螺钉的平均取出扭矩（4.4千克×厘米）（P<0.01）。通过对骨-螺钉界面的组织学检查证实骨组织长入多孔钛表面螺钉的表面。截骨间隙的影像学和组织学检查显示，与用标准光滑表面植入物固定的截骨术相比，用多孔钛涂层植入物固定的截骨术的一期间隙愈合加速，骨痂愈合较慢。