期刊
AMERICAN JOURNAL OF SPORTS MEDICINE
卷 40, 期 7, 页码 1673-1681出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0363546512442307
关键词
tibial slope; anterior cruciate ligament; ACL risk factors; noncontact injury
资金
- National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases [R01-AR049735, R01-AR05563, R01-AR056259]
Background: In vivo studies reporting tibial plateau slope as a risk factor for anterior cruciate ligament (ACL) injury have been published with greatly increasing frequency. Purpose: To examine and summarize the in vivo evidence comparing tibial slope in ACL-injured and uninjured populations. Study Design: Systematic review and meta-analysis. Methods: We reviewed publications in Scopus, SPORTDiscus, CINAHL, and PubMed to identify all studies reporting a measure of tibial plateau slope between ACL-injured groups and controls. A meta-analysis was performed including calculation of effect size and 95% confidence interval as well as 95% confidence intervals for the mean values of the measurement in each study. Results: Fourteen studies met our inclusion/exclusion criteria. Five of 6 radiographic studies reporting medial tibial plateau slope (MTPS) demonstrated significant differences between controls and ACL-injured groups, while only 1 of 7 magnetic resonance imaging (MRI) studies reported significant differences between groups. Mean MTPS measurements and standard deviations reported for controls ranged from 2.9 degrees +/- 2.8 degrees anterior to 9.5 degrees +/- 3 degrees posterior. For ACL-injured patients, MTPS ranged from 1.8 degrees +/- 3.5 degrees anterior to 12.1 degrees +/- 3.3 degrees posterior. Lateral tibial plateau slope (LTPS) was reported to be significantly greater in ACL-injured groups in all 5 MRI-based studies reporting group comparisons. Mean values for LTPS in controls ranged from 0.3 degrees +/- 3.6 degrees anterior slope to 9 degrees +/- 4 degrees posterior slope. In ACL-injured groups, mean reported LTPS values ranged from 1.8 degrees +/- 3.2 degrees to 11.5 degrees +/- 3.54 degrees posterior slope. Conclusion: Despite high measures of reliability for the various methods reported in current studies, there is vast disagreement regarding the actual values of the slope that would be considered at risk. Reported tibial slope values for control groups vary greatly between studies. In many cases, the study-to-study differences in normal tibial slope exceed the difference between controls and ACL-injured patients. The clinical utility of imaging-based measurement methods for the determination of ACL injury risk requires more reliable techniques that demonstrate consistency between studies.
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