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Influence of Chronic Ankle Instability on Physical Activity: A Critically Appraised Topic

Priya Patel, Luke Donovan, Tricia Hubbard-Turner, and Abbey C. Thomas

Lateral ankle sprains are the most common injury sustained by physically active individuals. The overwhelming majority of people who sprain their ankle go on to develop chronic ankle instability (CAI). CAI may cause affected individuals to limit their physical activity, leading to health issues such as obesity and cardiovascular disease. The growing body of literature suggests that functional limitations reported by individuals with CAI may lead a the decrease in physical activity. This critically appraised topic sought to determine if adolescent and college-aged individuals with CAI have lower physical activity levels than their healthy peers. A literature search was conducted in between August 2021–February 2022 using the terms “chronic ankle instability” and “physical activity.” Studies were included if the participants were adolescent or college-aged and had CAI. Three studies meeting the inclusion criteria were identified. The first study reported that college students with CAI walk fewer steps per week than their healthy peers, while the second study observed higher physical activity levels among adolescents with CAI. The third study incorporated details on how there is a high prevalence of ankle injury in adolescents, so methods to prevent the injury should be followed to avoid injury earlier on. Despite the conflicting evidence on how CAI impacts physical activity levels, physical activity remains important for long-term health. Thus, it is necessary to emphasize that individuals with CAI should seek treatment to mitigate recurrent ankle sprains in order to safely continue with physical activity.

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Plyometrics Did Not Improve Jump-Landing Biomechanics in Individuals With a History of Anterior Cruciate Ligament Reconstruction: A Randomized Controlled Trial

Hyunjae Jeon, Sean Krysak, Steven J. Pfeiffer, and Abbey C. Thomas

Second anterior cruciate ligament (ACL) injury has similar biomechanical risk factors as primary injury. Standard of care rehabilitation does not adequately mitigate these biomechanical risks. This study examined the effectiveness of a 4-week plyometric intervention on biomechanical risk factors of second ACL injury versus no intervention in patients with a history of ACL reconstruction. Thirty adults post-ACL reconstruction received 12 sessions of plyometric (age: 19.9 ± 1.62 years; body mass index: 23.9 ± 2.6 kg/m2; months postoperative: 35.7 ± 24.2) or no (age: 21.3 ± 3.5 years; body mass index: 27.7 ± 4.8 kg/m2; months postoperative: 45.3 ± 25.4) exercise intervention. Hip and knee biomechanics were quantified during a jump-landing task before and after the intervention. Individual response to the intervention was evaluated via minimal detectable change. Hip flexion angle had the greatest response to plyometric training. Overall, focused plyometric intervention did not adequately mitigate biomechanical risk factors of second ACL injury; thus, development of interventions capable of modifying biomechanics known to contribute to ACL injury risk remains necessary.

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Athletic Trainers’ Osteoarthritis Consortium: Raising Awareness of Osteoarthritis in the Sports Medicine Community

Abbey C. Thomas and Jeffrey B. Driban

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Differences in Health-Related Quality of Life Among Patients After Knee Injury

Rachel R. Kleis, Janet E. Simon, Michael Turner, Luzita I. Vela, Abbey C. Thomas, and Phillip A. Gribble

While knee injury-related pain and functional limitations are common in the physically active, the impact on general health is not well documented. Further, it is not known how much these outcomes differ among individuals that did or did not have surgery following the knee injury, as well as compared to those without knee injury history. We examined differences in health-related quality of life (HRQoL) and general health among patients after knee surgery, knee injury that did not require surgery, and healthy controls. Knee surgery participants reported higher body mass index and lower SF-8 physical component scores than knee nonsurgery and control (p < .001 all comparisons) groups. Knee nonsurgery participants had lower SF-8 physical component scores (p = .01) than control participants. Patients after knee surgery report more adverse health effects than those with nonsurgically treated knee injuries.