Daniels A U, Gemperline P, Grahn A R, Dunn H K
Ann Biomed Eng. 1984;12(3):233-46. doi: 10.1007/BF02364308.
A new method has been developed for continuous intra-operative monitoring of bone and implant loading patterns in the operative correction of scoliosis using the Harrington distraction rod. The method incorporates a strain gauge instrumented, distal Harrington hook and similarly equipped Harrington operating instruments (outrigger and distractor). These latter instruments are used to calibrate the hook's response to bone loads under existing operative conditions. Alternative methods of monitoring loading patterns were explored and rejected because they were noncontinuous, more difficult to use, altered the mechanics of the system, or required more expensive components. The method established is being used to avoid bone rupture or rod damage while gaining maximum spinal correction and to determine the effect of auxiliary implant components on loading patterns.
一种新方法已被开发出来，用于在使用哈林顿撑开棒进行脊柱侧弯手术矫正时，对骨骼和植入物的加载模式进行术中连续监测。该方法包括一个装有应变片的远端哈林顿钩以及同样配备的哈林顿手术器械（支臂和撑开器）。后一种器械用于在现有手术条件下校准钩子对骨骼负荷的反应。人们探索并摒弃了其他监测加载模式的方法，因为它们不连续、使用难度更大、改变了系统力学或需要更昂贵的部件。所建立的方法正用于避免骨骼破裂或棒材损坏，同时实现最大程度的脊柱矫正，并确定辅助植入部件对加载模式的影响。
