ArticleKnee surgery & related research2014
Discrepancies of Patellofemoral Indices between Supine and Standing Merchant Views.
Article in Knee surgery & related research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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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.
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Who cites it
3 citing papers in PubMed.
- Reconsideration of radiographic axial imaging techniques for the evaluation of patellofemoral alignment: skyline view vs. merchant view.Asia-Pacific journal of sports medicine, arthroscopy, rehabilitation and technology · 2026Article
- Radiographic measurement of the congruence angle according to Merchant: validity, reproducibility, and limits.Knee surgery & related research · 2023Article
- Is the effectiveness of patellofemoral bracing modified by patellofemoral alignment and trochlear morphology?BMC musculoskeletal disorders · 2017Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThis research was conducted to compare supine and standing Merchant views, to observe radiographic changes of the patellofemoral joint according to weight-bearing conditions, and to evaluate correlation factors affecting patellofemoral joint indices. MATERIALS AND
methodsForty-four patients without skeletal problems were selected for this study. Patellar tilt angle, lateral patellofemoral angle, congruence angle, lateral subluxation distance and lateral patellar displacement were measured on each radiograph and evaluated for statistical significance. Possible correlation factors that can affect the radiographic discrepancy were analyzed using the univariate and multivariate regression analysis.
resultsIn the standing Merchant view, the patellar tilt angle, congruence angle and lateral patellar displacement were significantly decreased (p<0.001), whereas the lateral patellofemoral angle was significantly increased (p<0.001) compared to that in the supine Merchant view. Thigh width (p<0.001, r(2)=0.22) and radiographic Q-angle (p<0.001, r(2)=0.34) were found correlated with the radiographic discrepancy of congruence angle. Discrepancy of the lateral patella displacement increased as radiographic Q-angle increased (p=0.027, r(2)=0.112).
conclusionsCompared with the supine Merchant view, standing (weight-bearing) Merchant view showed decreased patella tilt angle, congruence angle, and lateral patella displacement. The results indicate that both supine and standing Merchant views should be considered in the radiographic evaluation of the patellofemoral joint.
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