Comments on Reito et al.: Assessment of inter- and intra-observer reliability in the determination of radiographic version and inclination of the cup in metal-on-metal hip resurfacing

Bachhal, Vikas; Rangdal, Sushil; Saini, Gaurav; Dhillon, Mandeep Singh

doi:10.1007/s00264-012-1566-x

Cited by 1 publication

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“…Thus a method employing the least number of measurements made by observer should give the most precise results. 24 Our method of using the ellipse with its two foci circumvents these issues by directly measuring the angle of anteversion without needing measurement of any line segment. The method has relatively few steps and should take far less time than previously described methods.…”

Section: Discussionmentioning

confidence: 99%

GeoGebra: A reliable and free software for measuring acetabular cup anteversion on digitalized plain radiographs

Bachhal

Saini

Jindal

et al. 2020

Journal of Clinical Orthopaedics and Trauma

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Objective: Although accurate measurement of cup anteversion in hip replacement requires CT scans, however, its routine application, especially during follow-up, remains economically and ethically unreasonable. Thus, several methods have been devised for making this measurement on plain radiographs. In recent years, several ways have been adopted using software on digital radiographs. We present one such method which uses open access mathematical software GeoGebra. Methods: Anteversion was measured on 72 radiographs (36 cemented; 36 uncemented) by three different observers using this software. One observer repeated measurements at three weeks interval. Results: The intraclass correlation coefficient for interobserver variability and intraobserver variability was 0.982 (0.973e0.989) and 0.986 (0.978e0.991) respectively. There was a significant difference in the reliability of the method for cemented and uncemented cups with higher reliability for cemented cups (p < 0.001). Conclusion:GeoGebra software can be used as a reliable alternative for measuring acetabular cup anteversion on good quality well centred digital radiographs of the pelvis.

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Section: Discussionmentioning

confidence: 99%