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首页> 外文期刊>Foot & Ankle Orthopaedics >Assessing the Ankle Joint Line Level Before and After Total Ankle Arthroplasty With the “Joint Line Height Ratio”
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Assessing the Ankle Joint Line Level Before and After Total Ankle Arthroplasty With the “Joint Line Height Ratio”

机译：以“关节线高度比”，评估总踝关节置换术前后的踝关节线水平

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Background: Restoring the joint line is an important principle in total knee arthroplasty. However, the effect of joint line level on patient outcomes after total ankle arthroplasty (TAA) remains unclear, as there is no established method for measuring ankle joint level in TAA. The objective of this study was to develop a reliable radiographic ankle joint line measurement method and to compare ankle joint line level measured pre-TAA, post-TAA, and in nonarthritic ankles. Methods: A total of 112 radiographic sets were analyzed. Each set included weightbearing anteroposterior radiographs of the operative ankle taken preoperatively, 1-year postoperatively, and of the contralateral ankle. Measurements of vertical intermalleolar distance (VIMD) and vertical joint line distance (VJLD) at pre-TAA, post-TAA, and of the contralateral ankle were recorded by 2 authors on 2 separate occasions. The ratio of VJLD to VIMD was defined as the joint line height ratio (JLHR). Reliability of measurements and correlation between VIMD and VJLD were assessed. Pre-TAA, nonarthritic contralateral ankle, and post-TAA JLHR were compared and considered significantly different if P 0.9). There were strong positive correlations of VIMD and VJLD, r = 0.809 (pre-TAA)/0.756 (post-TAA), P .001. Mean (SD) pre-TAA, nonarthritic contralateral ankle, and post-TAA JLHRs were 1.54 (0.31), 1.39 (0.26), and 1.62 (0.49), respectively. Pre- and post-TAA JLHRs were significantly higher compared to the nonarthritic contralateral ankle (P .05). JHLR was not significantly different between pre- and post-TAA (P = .15). Conclusion: The JLHR was reliable and could be a clinically applicable method for assessing ankle joint line level in patients undergoing TAA. End-stage ankle arthritis demonstrated elevated joint line level compared with nonarthritic ankles, and the joint line level post-TAA remained elevated compared with nonarthritic ankles. Further studies are needed to understand the effect of joint line elevation on clinical outcomes after TAA. Level of Evidence: Level III, retrospective comparative study.
机译：背景：恢复联合线是全膝关节形成术中的重要原则。然而，在总踝关节置换术（TAA）之后，关节线水平对患者结果的影响仍不清楚，因为没有确定TAA中的踝关节水平的建立方法。本研究的目的是开发一种可靠的放射线照相踝关节线测量方法，并比较脚踝关节线路水平测量的TAA前后，后踝关节。方法：分析了总共112个放射线图。每个设置包括术前，1年术后和对侧踝关节术后的操作脚踝的递力串行射线照片。在2个作者上，在2个作者上，在2个作者中，在TAA，TAA和对侧踝部的垂直垂直距离（VIMD）和垂直接合线距离（VJLD）的测量值在2个单独的场合中记录。 VJLD与VIMD的比率定义为关节线高度比（JLHR）。评估VIMD和VJLD之间的测量和相关性的可靠性。比较了TAA，非接受性对侧踝和后TAA JLHR，如果P 0.9）则被认为有显着不同。 VIMD和VJLD的正相关性强，R = 0.809（TAA）/0.756（后TAA），P <.001。平均值（SD）预TAA，非接受拮抗踝和后约3.54（0.31），1.39（0.26）和1.62（0.49）。与非接伤性对侧踝关节（P <0.05）相比，TAA JLHRs的显着高得多。在TAA之前和后的jhlr没有显着差异（p = .15）。结论：JLHR是可靠的，并且可以是用于评估TAA患者的踝关节线水平的临床应用方法。与非接受脚踝相比，末期踝关节炎表现出升高的关节线水平，与梭脚踝相比，TAA后的关节线水平仍然升高。需要进一步的研究来了解TAA后关节线升高对临床结果的影响。证据水平：第三级，回顾性比较研究。

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