Assessing women's lacrosse head impacts using finite element modelling

作者：Clark J Michio^*; Hoshizaki T Blaine; Gilchrist Michael D

来源：Journal of the Mechanical Behavior of Biomedical Materials, 2018, 80: 20-26.

DOI：10.1016/j.jmbbm.2018.01.020

• Concussion
• Brain strain
• Impact mechanics
• Injury prevention
• Helmet

Recently studies have assessed the ability of helmets to reduce peak linear and rotational acceleration for women's lacrosse head impacts. However, such metisures have had low correlation with injury, Maximum principal strain interprets loading curves which provide better injury prediction than peak linear and rotational acei. oration, especially in compliant situations which create low magnitude accelerations but long impact durations, The purpose of this study was to assess head and helmet impacts in women's lacrosse using finite element modelling, Linear and rotational acceleration loading curves from women's lacrosse impacts to a helmeted and an unhelmeted Hybrid III headform were input into the University College Dublin Brain Trauma. Model, The finite element model was used to calculate maximum principal strain in the cerebrum. The results demonstrated for unhelmeted impacts,.falls and ball impacts produce higher maximum pi in.cipal strain values than stick and shoulder collisions. The strain values for falls and ball impacts were found to be within the range of concussion and traumatic brain injury, The results also showed that men's lacrosse helmets reduced maximum principal strain for follow through slashing, falls and ball impacts, These. findings are novel and dernon,sti.ate that for high risk events, maximum principal snain can be reduced by implementing the use of helmets if the rules of the sport do not effectively manage such situations,

• 出版日期2018-4