目的评价采用后外侧入路切开复位内固定治疗三踝骨折的价值。方法自2009-03—2012-06采用后外侧入路切开复位内固定治疗三踝骨折23例,处理外踝骨折时钢板放置于腓骨后侧或外侧,对后踝骨折行钢板或螺钉固定。观察术后切口及骨折愈合情况...目的评价采用后外侧入路切开复位内固定治疗三踝骨折的价值。方法自2009-03—2012-06采用后外侧入路切开复位内固定治疗三踝骨折23例,处理外踝骨折时钢板放置于腓骨后侧或外侧,对后踝骨折行钢板或螺钉固定。观察术后切口及骨折愈合情况,术后3、12个月采用AOFAS踝-后足评分标准评价踝关节功能。结果术后3个月23例均获得随访,术后12个月2例失访。术后7 d 2例外侧和内侧切口周围同时出现张力性水泡,2例外侧切口周围出现张力性水泡,未出现切口感染。1例出现足背外侧麻木,术后3个月复诊时症状消失。术后3个月X线片显示23例骨折线均模糊,AOFAS评分:优12例,良8例,可2例,差1例,优良率86.96%。术后12个月X线片显示骨折线均消失,AOFAS评分:优17例,良2例,可2例,优良率90.48%。结论采用后外侧入路行切开复位内固定术治疗三踝骨折可以一次性复位固定外踝和后踝骨折,联合内侧切口可以一个体位下完成三踝骨折的治疗,对软组织破坏少,骨折可获得解剖复位,术后踝关节功能恢复佳、并发症少。展开更多
Cu matrix composite reinforced with 10%（volume fraction） carbon nanotubes（CNTs/Cu） and pure Cu bulk were prepared by powder metallurgy techniques under the same consolidation processing condition.The effect of ele...Cu matrix composite reinforced with 10%（volume fraction） carbon nanotubes（CNTs/Cu） and pure Cu bulk were prepared by powder metallurgy techniques under the same consolidation processing condition.The effect of electrical current on tribological property of the materials was investigated by using a pin-on-disk friction and wear tester.The results show that the friction coefficient and wear rate of CNTs/Cu composite as well as those of pure Cu bulk increase with increasing the electrical current without exception,and the effect of electrical current is more obvious on tribological property of pure Cu bulk than on that of CNTs/Cu composite;the dominant wear mechanisms are arc erosion wear and plastic flow deformation,respectively;CNTs can improve tribological property of Cu matrix composites with electrical current.展开更多
文摘目的评价采用后外侧入路切开复位内固定治疗三踝骨折的价值。方法自2009-03—2012-06采用后外侧入路切开复位内固定治疗三踝骨折23例,处理外踝骨折时钢板放置于腓骨后侧或外侧,对后踝骨折行钢板或螺钉固定。观察术后切口及骨折愈合情况,术后3、12个月采用AOFAS踝-后足评分标准评价踝关节功能。结果术后3个月23例均获得随访,术后12个月2例失访。术后7 d 2例外侧和内侧切口周围同时出现张力性水泡,2例外侧切口周围出现张力性水泡,未出现切口感染。1例出现足背外侧麻木,术后3个月复诊时症状消失。术后3个月X线片显示23例骨折线均模糊,AOFAS评分:优12例,良8例,可2例,差1例,优良率86.96%。术后12个月X线片显示骨折线均消失,AOFAS评分:优17例,良2例,可2例,优良率90.48%。结论采用后外侧入路行切开复位内固定术治疗三踝骨折可以一次性复位固定外踝和后踝骨折,联合内侧切口可以一个体位下完成三踝骨折的治疗,对软组织破坏少,骨折可获得解剖复位,术后踝关节功能恢复佳、并发症少。
基金Project(2007CB607603)supported by the National Basic Research Program of China
文摘Cu matrix composite reinforced with 10%（volume fraction） carbon nanotubes（CNTs/Cu） and pure Cu bulk were prepared by powder metallurgy techniques under the same consolidation processing condition.The effect of electrical current on tribological property of the materials was investigated by using a pin-on-disk friction and wear tester.The results show that the friction coefficient and wear rate of CNTs/Cu composite as well as those of pure Cu bulk increase with increasing the electrical current without exception,and the effect of electrical current is more obvious on tribological property of pure Cu bulk than on that of CNTs/Cu composite;the dominant wear mechanisms are arc erosion wear and plastic flow deformation,respectively;CNTs can improve tribological property of Cu matrix composites with electrical current.
