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Single-bundle versus double-bundle reconstruction for anterior cruciate ligament rupture: a meta-analysis-does anatomy matter?
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OrthoEvidence Journal (OE Journal) - ACE Report
OE Journal. 2013;1(12):225 Arthroscopy. 2012 Mar;28(3):405-24From the literature, 12 studies were identified (5 randomized trials and 7 observational studies) that were compiled for meta-analysis of double and single bundle ACL reconstructions. Primary outcomes of concern were anterior and rotational laxity and the range of motion (ROM). Secondary outcomes were IKDC, Lachman test, Lysholm score and Tegner test. The meta-analysis of randomized trials indicated favorable results for double bundle reconstruction in terms of anterior and rotational laxity, while no differences in ROM were present.
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Was the validity of all of the studies referred to in the text assessed with use of appropriate criteria (either in selecting the studies for inclusion or in analyzing the studies that were cited)?
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Sí = 1
Incierto = 0,5
No relevante = 0
No = 0
La evaluación de los criterios de información evalúa la transparencia con la que los autores informan de las características metodológicas y del ensayo dentro de la publicación. La evaluación se divide en cinco categorías que se presentan a continuación.
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Introduction
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Accessing Data
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Analysing Data
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Results
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Discussion
Detsky AS, Naylor CD, O'Rourke K, McGeer AJ, L'Abbé KA. J Clin Epidemiol. 1992;45:255-65
El Índice de Fragilidad es una herramienta que ayuda en la interpretación de hallazgos significativos, proporcionando una medida de fuerza para un resultado. El Índice de Fragilidad representa el número de eventos consecutivos que es necesario añadir a un resultado dicotómico para que el hallazgo deje de ser significativo. Un número pequeño representa un hallazgo más débil y un número grande un hallazgo más fuerte.
¿Por qué se necesitaba ahora este estudio?
A number of different reconstruction methods are used for the repair of ACL deficient knees, and single bundle reconstruction is currently the standard. However, double bundle reconstruction allegedly provides superior anterior and rotational laxity when compared to single bundle, due to a more anatomical restoration of the double bundles of the ACL when placed at the native ACL insertion site. This meta-analysis was conducted to determine if double bundle ACL reconstruction leads to better clinical outcomes. Sub group analysis of studies with greater than two year follow-up and those that used anatomical reconstruction was also completed.
¿Cuál era la pregunta principal de la investigación?
Does double-bundle anterior cruciate ligament reconstruction lead to reduced anterior and rotational laxity and range of motion compared to single bundle repair?
¿Cuáles fueron los hallazgos importantes?
- Double bundle ACL reconstruction provided superior anterior laxity scores measured by KT 1000 arthrometer, with a mean difference of 0.56mm when compared to single bundle reconstruction in the randomized trials (95% CI; -0.98 - -0.14) (p=0.009)
- Pivot shift testing in the randomized trials favored double bundle reconstruction with an RR 0.31 (95% CI; 0.16 - 0.61) (p=0.0007) indicating a 69% reduction in the risk of a positive pivot shift test
- There were no differences in range of motion between single and double bundle reconstructions in the randomized or observational trials
- The observational studies demonstrated a 67% reduction in the risk of a positive Lachman test for double bundle reconstruction (RR 0.33; 95% CI; 0.17 to 0.65 p=0.001)
- Assessment of anatomical reconstructions demonstrated favorable results for KT arthrometer, mean difference -0.70mm, and pivot shift test, RR 0.29, for anatomical double bundle reconstruction compared to single bundle
- Non-anatomical double bundle reconstruction had a relative risk of extension deficit that was 2.7 times greater than non-anatomical single bundle reconstruction
¿Qué es lo que más debo recordar?
The meta-analysis demonstrated that double bundle ACL reconstruction provided superior anterior laxity and rotational laxity as measure by KT arthrometer, Lachman test and pivot shift test. Subgroup analyses of studies with a follow-up greater than two years and anatomical double and single bundle reconstruction also found similar results.
¿Cómo afectará esto al cuidado de mis pacientes?
Further study using long-term follow-up are required to detect and assess degenerative changes due to abnormal kinematics. Until this research provides conclusive results both anatomical single and double bundle reconstruction are adequate options for those with ACL deficient knees.
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