Reducing ACL injury risk: A meta-analysis of prevention programme effectiveness
Clemens Clar1, Stefan F Fischerauer1, Andreas Leithner1
1Department of Orthopaedics and Trauma, Medical University of Graz, Graz, Austria.
Purpose:
The aim of this study was to conduct a meta-analysis of the literature regarding anterior cruciate ligament (ACL) injury prevention programmes (IPPs) in order to assess the effectiveness of ACL prevention programmes based on current high-quality studies. The hypothesis was that the implementation of ACL IPPs significantly reduces the incidence of ACL ruptures compared to standard practice.
Methods:
A meta-analysis of the literature was conducted using the databases PubMed, EMBASE, MEDLINE, CINHAL and Cochrane Central Register of Controlled Trials. The search terms utilized were ACL, injury, knee, control and prevention. The collected data and reported clinical outcomes were independently gathered by three different individuals. After evaluating the heterogeneity of the studies, the DerSimonian-Laird random effects models were employed to determine the pooled risk ratios (RRs) and the risk differences (RDs) regarding ACL Injuries. The RD was utilized to ascertain the number needed to treat.
Results:
The search strategy identified 743 studies, of which 11 met all inclusion and quality criteria for pooled analysis. The total number of study participants was 16,316. The overall RR of sustaining an ACL injury in the intervention group was 0.36 (95% confidence interval [CI]: 0.23 to 0.57) of the control group, showing a significant reduction in the ACL injury risk of the intervention group (p < 0.001). We identified an RD of -1.4% (95% CI: -2.4% to -0.4%) in favour of the intervention group. The number needed to treat in preventing one ACL rupture was 71.
Conclusion:
In conclusion, the study clearly demonstrates a significant positive preventive effect of training programmes concerning ACL injuries (p < 0.001). The pooled estimates indicate that such programmes result in a significant reduction of ACL injury risks (p < 0.001). Despite the moderate quality of the included literature, the results exhibit robustness. However, based on the literature examined, no definitive superior training programme could be identified.
Level Of Evidence:
Level II.
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