Accuracy of biplanar linear radiography versus conventional radiographs when used for lower limb and implant measurements

Autor: Andrew Kean Seng Lim, James Hoi Po Hui, Chen Xi Kasia Chua, Si Heng Sharon Tan
Rok vydání: 2021
Předmět:
Zdroj: Archives of Orthopaedic and Trauma Surgery. 142:735-745
ISSN: 1434-3916
DOI: 10.1007/s00402-020-03700-3
Popis: The current standard of care for measuring lower extremity length and angular discrepancies is using a full-length standing anteroposterior radiograph. However, there has been increasing interest to use biplanar linear EOS imaging as an alternative. This study aims to compare lower extremity length and implant measurements between biplanar linear and conventional radiographs. In this 5-year retrospective study, all patients who had a standing full-length anteroposterior and biplanar linear radiographs (EOS®) that include the lower extremities done within one year of each other were included. Patients who underwent surgery in between the imaging, underwent surgeries that could result in graduated length or angulated corrections and inadequate exposure of the lower extremity were excluded. Four radiographic segments were measured to assess lower limb alignment and length measurements. Height and width measurements of implants were performed for patients who had implants in both imaging. When comparing imaging and actual implant dimensions, biplanar linear radiographs were accurate in measuring actual implant height (median difference = − 0.14 cm, p = 0.66), and width (median difference = − 0.13 cm, p = 0.71). However, conventional radiographs were inaccurate in measuring actual implant height (median difference = 0.19 cm, p = 0.01) and width (median difference = 0.61 cm, p
Databáze: OpenAIRE
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