Radiographic Technique for Routine Clinical Measurement of Postoperative Total Knee Extension

IF 0.2 Q4 ORTHOPEDICS Techniques in Orthopaedics Pub Date : 2022-11-17 DOI:10.1097/BTO.0000000000000611
M. Hungerford, P. Neubauer, Jordan Ochs, M. Jackson, A. Boner
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Abstract

Introduction: We propose a novel clinical technique to easily obtain a radiographic measurement for terminal passive knee extension based upon a weight-bearing lateral radiograph. Materials and Methods: Lateral radiographs were obtained with the patient in the standing position. The leg was positioned with slight hip flexion and full passive extension of the knee by instructing the patient to bear partial weight through their heel, with simultaneous use of a wooden wedge to dorsiflex the foot to neutral and to aid in balance. A Terminal extension was measured radiographically with digital imaging software. Fifty postoperative knee radiographs were used in assessing inter-observer and intra-observer reliability. Results: Inter-observer reliability yielded an Intraclass Correlation Coefficient of 0.973. The correlation coefficient for intra-observer reliability was 0.980. Conclusion: With the use of weight-bearing extension radiographs and our measurement technique, we present a method that can easily be applied across any setting in total knee arthroplasty to obtain accurate, objective data on patient knee extension.
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术后全膝关节伸度临床常规测量的影像学技术
简介:我们提出了一种新的临床技术,可以轻松地获得基于负重侧位x线片的终末被动膝关节伸展的x线测量。材料与方法:采用站立位摄侧位片。通过指导患者通过脚跟承受部分重量,同时使用木楔使足背屈至中性并帮助保持平衡,使患者的髋部轻微屈曲,膝关节完全被动伸展。用数字成像软件测量终末延伸。50张术后膝关节x线片用于评估观察者间和观察者内的可靠性。结果:观察者间信度的类内相关系数为0.973。观察者内信度相关系数为0.980。结论:通过使用负重伸展x线片和我们的测量技术,我们提出了一种方法,可以很容易地在全膝关节置换术的任何情况下应用,以获得准确、客观的患者膝关节伸展数据。
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来源期刊
CiteScore
0.60
自引率
0.00%
发文量
31
期刊介绍: The purpose of Techniques in Orthopaedics is to provide information on the latest orthopaedic procedure as they are devised and used by top orthopaedic surgeons. The approach is technique-oriented, covering operations, manipulations, and instruments being developed and applied in such as arthroscopy, arthroplasty, and trauma. Each issue is guest-edited by an expert in the field and devoted to a single topic.
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