The 2012 ABJS Nicolas Andry Award: The Sequence of Prevention: A Systematic Approach to Prevent Anterior Cruciate Ligament Injury
ABSTRACT ACL injuries are common, often devastating injuries that lead to short-term disability and long-term sequelae, many of which lack effective treatment, such as osteoarthritis. Therefore, prevention of ACL injury is currently the only effective intervention for these life-altering sequelae, while much of the literature has a rehabilitative focus.
The primary long-term purpose of our multidisciplinary collaborative research team has been to develop ACL injury prevention programs by determining which factors related to ACL injury should be altered, followed by how and when they should be altered.
Our primary study objectives were to determine: (1) modifiable risk factors; (2) how these factors can best be modified; and (3) when is the best time to diminish these risk factors. Throughout the course of various studies, we determined the modifiable factors related to increased ACL injury risk. Our research team then focused on exploring numerous ways to augment these factors to maximize prevention efforts. We developed a sequence of prevention models that provide a framework to monitor progress toward the ultimate goal of preventing ACL injuries.
The modifiable factors shown in our work include biomechanical and neuromuscular functionality. When targeted in physical training, we have determined that these factors can be enhanced to effectively aid in the prevention of ACL injuries. Preliminary data have shown that childhood and early adolescence may be valuable periods to implement such training.
Current evidence has led to the evolution of clinical assessment tools for high-risk athletes and interventions for large populations and specific high-risk individuals. Targeted intervention implemented at the specified developmental stage of highest risk may be the final step toward the maximal reduction of ACL injury risk in young athletes.
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- "recommended that body segment and joint kinematics be documented when administering movement screens, particularly given that previous efforts to do so have yielded benefits (e.g. ACL screening has helped to inform exercise prescription and prevent future injury (Sugimoto, Myer, Bush, Klugman, Medina McKeon, & Hewett, 2012)). "
ABSTRACT: To examine the relationship between the composite Functional Movement Screen (FMS) score and performers' spine and frontal plane knee motion. Examined the spine and frontal plane knee motion exhibited by performers who received high (>14) and low (<14) composite FMS scores. Participants' body motions were quantified while they performed the FMS. Biomechanics laboratory. Twelve men who received composite FMS scores greater than 14 were assigned to a high-scoring group. Twelve age-, height- and weight-matched men with FMS scores below 14 were assigned to a low-scoring group. Composite FMS scores and peak lumbar spine flexion/extension, lateral bend and axial twist, and left and right frontal plane knee motion. Significant differences (p < 0.05) and large effect sizes (>0.8) were noted between the high- and low-scoring groups when performing the FMS tasks; high-scorers employed less spine and frontal plane knee motion. Substantial variation was also observed amongst participants. Participants with high composite FMS scores exhibited less spine and frontal plane knee motion while performing the FMS in comparison to their low-scoring counterparts. However, because substantial variation was observed amongst performers, the FMS may not provide the specificity needed for individualized injury risk assessment and exercise prescription. Copyright © 2015 Elsevier Ltd. All rights reserved.Physical Therapy in Sport 02/2015; DOI:10.1016/j.ptsp.2015.02.001 · 1.37 Impact Factor
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- "A concern with these efforts, however, is the often extended time between data collection and the resultant injury. This time lapse between testing and injury may compromise outcome efficacies, due to additional factors such as ongoing training regimes having the ability to induce changes in neuromuscular control  . Neuromuscular abnormalities that evolve during this period may therefore precipitate injury rather than the originally recorded parameters. "
ABSTRACT: This case report examined the neuromuscular function of a competitive female netball player six days prior to an incident where she sustained an acute anterior cruciate ligament injury during normal sports activity. Electromyography was used to examine activation onsets of four lower limb muscles (rectus femoris, biceps femoris, medial hamstrings and gluteus medius) relative to initial contact (IC) during netball-specific landings of varying complexity. The results of the injured participant were compared to the remaining participants in the study (n = 8), and the injured participant’s injured limb was compared to the contralateral limb. The injured participant was the only player to record delayed pre-injury muscle onsets after IC for all muscles tested in the injured limb, while her non-injured limb was comparable to the other participants tested. Furthermore, delayed muscle onset after IC occurred more frequently as landing complexity increased. This case report suggests that delayed muscle activity onset after IC during landing may be an important risk factor for ACL injury.The Knee 01/2014; 21(3):789-792. DOI:10.1016/j.knee.2014.01.005 · 1.94 Impact Factor
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- "Other movements evaluated were whether the lumbar spine flexed, extended, and/or laterally bent during jumping or landing and if the hip/leg musculature was able to keep the front knee in midline throughout the test. This was of interest because hip stability has been correlated with injuries to the anterior cruciate ligament of the knee . "
ABSTRACT: Background. Momentary lapses in concentration contribute to workplace accidents. Given that blood glucose (BG) and hydration levels have been shown to affect vigilance, this study proposed to investigate these parameters and functional movement patterns of ski-resort workers and to determine whether an educational program to stabilize BG and hydration and encourage joint stability had an effect in decreasing occupational injuries. Methods. Seventy-five instructors, patrollers and, lift-operators at five snowsport resorts were evaluated for BG, vigilance, workload, dietary/hydration practices, and functional-movement patterns. Injury rates were tabulated before and after an educational program for nutrition and functional-movement awareness and compared to other resorts. Results. Workers showed poor stability at the lumbar spine, knee, and shoulder. BG levels were normal but variable (%CV = 14 ± 6). Diets were high in sugar and fat and low in water and many nutrients. Medical Aid and Lost Time claims declined significantly by 65.1 ± 20.0% (confidence interval −90.0% ≤μ ≤ −40.2%) in resorts that used the educational program whereas four control resorts not using the program experienced increases of 33.4 ± 42.9% (confidence interval −19.7% ≤μ ≤ −86.7%; F[2,12] = 21.35, P < 0.0001 ) over the same season. Conclusion. Provision of snowsport resort workers with educational programs encouraging hydration, diet to stabilize BG, and functional-movement awareness was effective in reducing worksite injuries in this population.07/2013; 2013(2):121832. DOI:10.1155/2013/121832