Heat generation due to drilling Kirschner wires (K-wires) into bone can lead to serious complications. Hammering K-wires could be an alternative insertion method because it generates less heat and results in better fixation and a shorter insertion time. There is, however, no in vivo information about insertion time and biomechanics of hammered K-wires. Insertion time was measured when drilling or hammering K-wires into femurs and tibias of 16 rabbits. Four K-wires inserted in one hind limb were used to measure extraction and torque forces directly after insertion ( T = 0) and four K-wires inserted in the contralateral hind limb were used for the same measurements 4 weeks after insertion ( T = 4). The insertion time for hammering was significantly shorter compared to drilling. Extraction and torque properties measured at T = 0 and T = 4 were equal for both techniques. Hammering, however, resulted in more cracks. Based on these results neither of these methods can be identified as a superior technique to insert K-wires in fragile bones.
European Journal of Plastic Surgery – Springer Journals
Published: Jun 1, 2007
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