Journal of Forensic Biomechanics

Biomechanics Laboratory, Legacy Research Institute, Portland, USA

Biography

Dr Bottlang received his PhD in Biomechanical Engineering from the University of Iowa. He came to Legacy in 1999 to start the Legacy Biomechanics Laboratory. He developed a “pelvic sling” that stabilizes fractures of the pelvis to minimize internal bleeding and resulting mortality. Today, his patented device is the standard of care for pelvic fracture stabilization in over 40 countries.

Publications

• Research Article   
  A Novel Strategy for Mitigation of Oblique Impacts in Bicycle Helmets
  Author(s): Emily Bliven, Alexandra Rouhier, Stanley Tsai, Rémy Willinger, Nicolas Bourdet, Caroline Deck, Steven M Madey and Michael Bottlang*
  
  A principal cause of traumatic brain injury is rotational head acceleration, which can induce brain injury even in absence of a direct impact to the head. A bicycle fall typically leads to an oblique impact of the head that induces rotational head acceleration. To mitigate this rotational head acceleration, a novel bicycle helmet concept has been developed that employs a collapsible cellular structure. This study quantified the efficacy of this technology in comparison to traditional bicycle helmets made of rigid Expanded Polystyrene (EPS). Prototype helmets  with the Cellular structure (CELL) and standard EPS helmets (CONTROL) were subjected to oblique impacts in vertical drop tests onto angled anvils. Helmets were tested at impact speeds of 4.8 m/s and 6.2 m/s and at impact angles of 30°, 45°, and 60°. Linear and rotational headform acceleration and neck loads of an.. View more»
  

  Abstract PDF