ArticleOrthopaedic journal of sports medicine2025
Reliability and Reproducibility of the EOS 3D Imaging System in Measuring TT-TG Distance in Patients With Recurrent Patellar Dislocation.
Article in Orthopaedic journal of sports medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Assessment and management of torsional malalignment in paediatric patients with patellofemoral joint instability.Journal of children's orthopaedics · 2026Article
- Overcoming Limitations in Tibial Tubercle-Trochlear Groove Distance Measurement: A Study of Its Reproducibility and Reliability in High-Grade Trochlear Dysplasia.Orthopaedic journal of sports medicine · 2026Article
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Authors and funding
4 authors.
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Abstract
Background: In clinical practice, preoperative radiographic assessment of the tibial tuberosity-trochlear groove (TT-TG) distance in patients with recurrent patellar dislocation (RPD) typically relies on conventional computed tomography (CT). A novel EOS imaging system may be a new option for measuring the TT-TG, which provides less radiation and costly time to perform. Purpose: To determine the reliability and reproducibility of the EOS 3-dimensional (3D) imaging system to measure TT-TG values. Study Design: Cohort study (Diagnosis); Level of evidence, 2. Methods: Data from 34 patients (36 knees) diagnosed with RPD in our sports medicine department were retrospectively analyzed. Two senior radiologists independently measured the alignment of the patients' lower limbs via EOS images. The TT-TG values measured by EOS 3D images and CT scans were compared. To evaluate intrareader reliability, measurements were repeated on 2 separate occasions ≥3 days apart and intraclass correlation coefficients (ICCs) and Bland-Altman plots were calculated. Results: When lower-limb alignment was measured with EOS, there were no statistically significant differences in the femoral and tibial lengths ( Conclusion: Our study showed that the EOS 3D imaging system provides reliable and reproducible TT-TG measurements comparable with CT. This technology has the potential to serve as an alternative method for assessing lower-limb alignment and TT-TG values in patients with RPD.
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