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首页> 外文期刊>Annals of Biomedical Engineering: The Journal of the Biomedical Engineering Society >Subject-Specific Surgical Planning for Hip Replacement: A Novel 2D Graphical Representation of 3D Hip Motion and Prosthetic Impingement Information
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Subject-Specific Surgical Planning for Hip Replacement: A Novel 2D Graphical Representation of 3D Hip Motion and Prosthetic Impingement Information

机译：髋关节替换的特定主题外科手术规划：3D髋关节运动的新型2D图形表示和假体冲击信息

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摘要

Prosthetic impingement (PI) following total hip arthroplasty (THA), which arises due to the undesirable relative motion of the implants, results in adverse outcomes. Predicting PI through 3D graphical representation is difficult to comprehend when all activities are combined for different implant positions. Therefore, the aim of the paper was to translate this 3D information into a 2D graphical representation for improved understanding of the patient's hip motion. The method used planned implanted geometry, positioned onto native bone anatomy, and activity definitions as inputs to construct the 2D polar plot from 3D hip motion in four steps. Three case studies were performed to highlight its potential use in (a) combining different activities in a single plot, (b) visualising the effect of different cup positions and (c) pelvic tilt on PI. A clinical study with 20 'Non-Dislocators' and 20 'Dislocators' patients after 2 years of THA was performed to validate the method. The results supported the study hypothesis, in that the incidence of PI was always higher in the 'Dislocators' compared to the 'Non-Dislocators' group. The proposed 2D graphical representation could assist in subject-specific THA planning by visualising the effect of different activities, implant positions, pelvic tilt and related aspects on PI.
机译：在总髋关节置换术（THA）之后的假体冲击（PI）由于植入物的不希望的相对运动而产生的，导致不良结果。当所有活动组合到不同的植入位置时，难以理解通过3D图形表示预测PI。因此，纸张的目的是将该3D信息转换为2D图形表示，以改善对患者的臀部运动的理解。使用计划植入的几何形状的方法，定位在天然骨解剖学上，以及作为输入的输入，以在四个步骤中从3D臀部运动构造2D极性图。进行三种案例研究以突出其在（a）中的潜在用途，所述（a）在单个图中组合不同的活动，（b）可视化不同杯子位置和（c）骨盆倾斜对pi的效果。在2年后的临床研究与20个“非脱相器”和20个“脱位剂”患者进行了验证方法。结果支持研究假设，因为与“非脱相者的群体”相比，Pi的发病率总是更高。所提出的2D图形表示可以通过可视化不同活性，植入位置，盆腔倾斜和PI相关方面的效果来协助对象特定的THA规划。

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