ArticleJournal of experimental orthopaedics2026
Differential effects of knee flexion on Caton-Deschamps, patellotrochlear and Insall-Salvati indices: A dynamic magnetic resonance imaging-controlled study.
Article in Journal of experimental orthopaedics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: To evaluate the influence of knee flexion on patellar height measurements during active muscle movement using dynamic magnetic resonance imaging (MRI). Methods: Dynamic magnetic resonance (MR) images from 48 healthy participants were analyzed. Images were acquired over 30 s using a 3-Tesla MRI unit during active knee motion between 40° of flexion and full extension. Sagittal images were used to determine the femorotibial flexion angle (FTA), and patellar height was assessed at increasing flexion angles (5°-10° increments) using the Caton-Deschamps index (CDI), Insall-Salvati ratio (ISR) and patellotrochlear index (PTI). Measurements were performed independently by two raters on two separate occasions. Statistical analysis was performed using mixed-effects models and regression analyses. Results: Eighty knees from 48 individuals (24 males, 24 females; age 26.7 ± 5.0 years; height 176 ± 9.5 cm) were included. Within a mean active range of motion from 4.3° ± 7.8° to 38.5° ± 10.4°, patellar height changed differentially across all parameters. CDI (mean in extension 1.19 ± 0.16, 95% confidence interval [CI]: 1.10-1.19) decreased by 0.004 per degree of flexion ( Conclusion: Patellar height measurements strongly depend on knee position, particularly at low flexion angles. CDI and PTI demonstrated significant changes, whereas changes in ISR were minimal. Patellar height should therefore be interpreted with careful consideration of knee position and the specific index used. Level of Evidence: Level III, diagnostic study.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.