OBJECTIVES  The aim of this study was to determine whether a clamped drill guide can be used effectively to drill across equine distal third metacarpals and metatarsals and to compare accuracy and speed of a drilling with a hand-held drill guide. STUDY DESIGN  Eighty equine cadaver limbs were divided between four surgeons with varying experience. The limbs were randomly allocated to clamped or hand-held drill guides and placed in a stand in an upright/standing position on a metal table. Drilling times from cis- to trans cortices were measured. Post-drilling computed tomography images were used to assess drilling deviations in the dorsopalmar and proximodistal directions. RESULTS  Mean proximodistal deviation of the drill hole was distad for both guides and significantly (p = 0.01) less for the clamped drill guide +0.35° (range: -5.42°, +6.61°, standard deviation [SD] ± 3.18°) than the hand-held drill guide +2.05° (range: -5.24°, +9.81°, SD ± 3.69°). Mean dorsopalmar/plantar deviation was non-significantly (p = 0.17) less for the clamped drill guide -0.27° (range: -9.72°, +6.58°, SD ± 3.57°) than the hand-held drill guide +0.60° (range: -9.74°, + 12.33°, SD ± 4.51°). Mean time taken to drill from cis to trans cortex was significantly (p < 0.001) shorter with the clamped drill guide (41.2s) than the hand-held guide (56.6s). CONCLUSION  The clamped drill guide could be used successfully on the equine distal third metacarpals and metatarsals and resulted in some improved accuracy and reduced drilling time compared with the hand-held guide. The use of the clamped drill guide in vivo could be supported. This may be of benefit for certain fracture repairs in equids.

中文翻译：

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活体外比较手持式钻具引导器在远侧第三个掌骨和Meta骨中钻孔的精度。

目的本研究的目的是确定夹紧的钻具导向器是否可以有效地用于在马的远端第三掌骨和meta骨上进行钻孔，并与手持式钻具导向器比较钻孔的准确性和速度。研究设计80位马尸体肢体被划分为四位具有不同经验的外科医生。将四肢随机分配到夹紧或手持式钻具导轨上，并以直立/直立位置放在金属桌上的架子上。测量了从顺式皮质到反式皮质的钻孔时间。钻孔后的计算机断层扫描图像用于评估后掌和近颌方向的钻孔偏差。结果对于两个导向器，钻孔的平均近端偏差均无偏差，而对于夹紧的导向器，其偏差为+ 0.35°（p-0.012）（-5.42°，+ 6.61°，标准偏差[SD]±3.18°）比手持式钻具导轨+ 2.05°（范围：-5.24°，+ 9.81°，SD±3.69°）。夹紧式钻头导向器-0.27°（范围：-9.72°，+ 6.58°，SD±3.57°）比手持式钻头导向器+ 0.60°（p = 0.17）小得多（p = 0.17）。范围：-9.74°，+ 12.33°，SD±4.51°）。使用夹紧式钻导杆（41.2s）的时间要比手持式导杆（56.6s）短得多（p <0.001）。结论夹紧式钻具可以在手持式第三掌骨和distal骨上成功使用，与手持式钻具相比，可以提高准确性，减少钻孔时间。可以支持在体内使用夹紧的钻具。这可能对设备中的某些骨折修复有益。