K-wires are used for fixation of bone fragments of epi-/metaphyseal fractures, fractures of small bones, but also for reduction of fragments in multifragmental fractures to achieve stable fixation.
History of K-wire
In 1909, Martin Kirschner introduced the Kirschner wire (K-wire), initially used for skeletal traction but now serving various purposes. Its development was influenced by changing surgical goals and the introduction of antibiotics. Early K-wires were hammered into predrilled holes, but drilling became the standard insertion method due to its simplicity and benefits like percutaneous insertion. لكن, this technique can cause temperature elevation, leading to potential osteonecrosis and heat-related complications.
Different types of K-wire tips
Drilling Efficiency and Temperature of Three Types of Kirschner Wires
Using the same drill speed (rev/min) and feed rate, the medin K-wire point produced the lowest thrust force and torque. Drill point temperatures were highest with the trochar geometry (129 ± 6°C), followed by the diamond (98 ± 7°C). The lowest temperatures were recorded with the Medin K-wire (66 ± 2°C). On repeated drilling it could be used for up to 30 holes before reaching the less satisfactory drill performance of the diamond tip. The medin K-wire provides a better alternative as it requires less effort for insertion, generates less heat and may be re-used.
Graph 1 showing the thrust force and graph 2 the torque moment during the tool life test of the Medin wires in pig cortical bone (drill speed n = 280rev/min, feed rate f = 0.1mm/rev). For comparison the mean thrust force and torque moment of the diamond tip are included.
Graph 3 showing the temperature elevation for different K-wire tips when drilling into pig cortical bone over 35 seconds (drill speed n = 280 rev/min, feed rate f = 0.1 mm/rev).
حول الرعاية
CareFix هي مؤسسة وطنية محترفة ذات تقنية عالية تعمل في مجال تصميم المعدات الطبية لتقويم العظام, إنتاج, المبيعات والخدمة. تأسست في 2009, لقد كرسنا جهودنا لزراعة الأطفال,قدم & زرع الكاحل,external fixation. مرحبا بكم في زيارة المصنع,يبعد حوالي نصف ساعة عن مطار شنغهاي هونغكياو.