钻能与螺钉旋入扭矩、螺钉压缩和拔出强度相关：尸体研究。
Drilling Energy Correlates With Screw Insertion Torque, Screw Compression, and Pullout Strength: A Cadaver Study.
机构信息
From the Department of Orthopaedic Surgery, Stanford University Medical Center, Redwood City, CA.
出版信息
J Am Acad Orthop Surg. 2020 Dec 15;28(24):e1121-e1128. doi: 10.5435/JAAOS-D-19-00366.
INTRODUCTION
To determine whether drilling energy correlates with bone mineral density (BMD), maximum insertion torque (MIT), maximum screw compression, and pullout strength (POS).
METHODS
Ten cadaver tibias were used for testing. Unicortical pilot holes were drilled and the drilling energy measured. Drill site bone quality was determined with microcomputed tomography. Drill holes were randomly assigned to POS or MIT testing using 3.5-mm cortical screws engaging only the near cortex. Pearson correlation coefficients were calculated to determine the relationship between drilling energy, BMD, POS, MIT, and maximum screw compression.
RESULTS
Drilling energy was correlated with BMD (P < 0.001). Compared with BMD, drilling energy had a better correlation with MIT, maximum screw compression, and POS. Maximum screw compression also correlated with MIT (P = 0.012).
CONCLUSIONS
Drilling energy better correlates with MIT, maximum screw compression, and POS compared with BMD in cadaver cortical bone. Dynamically measuring drilling energy may help inform the orthopaedic surgeon as to the quality of the bone before insertion of implants.
简介
为了确定钻进能量是否与骨密度（BMD）、最大插入扭矩（MIT）、最大螺钉压缩和拔出强度（POS）相关。
方法
使用 10 个尸体胫骨进行测试。钻取单皮质导孔并测量钻进能量。使用微计算机断层扫描确定钻站点的骨质量。使用仅与近皮质啮合的 3.5 毫米皮质螺钉，随机将钻孔分配用于 POS 或 MIT 测试。计算 Pearson 相关系数，以确定钻进能量、BMD、POS、MIT 和最大螺钉压缩之间的关系。
结果
钻进能量与 BMD 呈正相关（P<0.001）。与 BMD 相比，钻进能量与 MIT、最大螺钉压缩和 POS 的相关性更好。最大螺钉压缩与 MIT 也呈正相关（P=0.012）。
结论
与 BMD 相比，在尸体皮质骨中，钻进能量与 MIT、最大螺钉压缩和 POS 的相关性更好。动态测量钻进能量可以帮助骨科医生在植入物插入之前了解骨的质量。
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