Franssen B B G M, Schuurman A H, Mink Van Der Molen A B, Kon M
Department of Plastic Reconstructive and Hand Surgery, University Medical Centre Utrecht, The Netherlands.
J Hand Surg Eur Vol. 2009 Apr;34(2):215-8. doi: 10.1177/1753193408097860. Epub 2009 Mar 12.
Kirschner wire characteristics affect the heating of bone during insertion and the subsequent strength of fixation. We inserted 90 sharp and 90 obtuse trocar-tip K-wires into 90 fresh frozen human cadaver metacarpals using either a drill or a pneumatic hammer. The temperature elevation, insertion time and extraction force were measured for four K-wire insertion combinations: drilling sharp; drilling obtuse; hammering sharp; hammering obtuse. Hammering resulted in significantly lower temperature elevations than drilling. Hammering sharp K-wires resulted in the highest extraction forces. The first and fifth metacarpals showed significantly lower temperature elevations than the other metacarpals, while the insertion time was significantly higher in the second and third metacarpal than in the other metacarpals. Hammering sharp trocar-tip K-wires minimises thermal damage to bone and gives the strongest fixation.
克氏针的特性会影响其插入过程中骨骼的发热情况以及随后的固定强度。我们使用钻头或气锤将90根尖锐的和90根钝头的套管针尖端克氏针插入90根新鲜冷冻的人体掌骨中。针对四种克氏针插入组合测量了温度升高、插入时间和拔出力：钻尖锐克氏针；钻钝克氏针；锤击尖锐克氏针；锤击钝克氏针。锤击导致的温度升高显著低于钻孔。锤击尖锐克氏针产生的拔出力最高。第一和第五掌骨的温度升高显著低于其他掌骨，而第二和第三掌骨的插入时间显著高于其他掌骨。锤击尖锐的套管针尖端克氏针可将对骨骼的热损伤降至最低，并提供最强的固定效果。
