Abstract
Despite growing public health awareness of concussions and their cognitive sequelae, research has predominantly focused on generic bulk-head form impact metrics rather than the study of how brain tissue responds to head impacts. In this paper, the authors develop and validate a novel testing fixture that can configure standard head forms in an inverted orientation, with the future goal of testing inverted cadaveric specimens with gravity-driven perfusion of the head. The inverted testing fixture was integrated with an existing pneumatic linear impactor system and suspended a Hybrid III instrumented head and neck form on an x–y linear sliding carriage. Validation studies compared impacts in upright and inverted orientations, with and without a football helmet, at 5.5 and 7.4 m/s. Angular velocity and linear acceleration measures were found to be similar. The results support the use of the novel fixture for studying inverted cadaveric specimens during simulated concussive impacts.
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