Safety analysis of battery-powered ride-on toy car with seat and restraint system modifications.

Modified battery-powered ride-on toy cars represent novel rehabilitation tools for children with disabilities. However, safety concerns exist with the use of these battery-power toys and pose a barrier for the growth of adaptive ride-on toy programs due to the lack of evidence demonstrating that modifications made to these cars are safe. Within this context, the purpose of this study was to investigate whether modifications to ride-on toys are sufficient to prevent common injuries and determine how these modifications influence injury metrics.

A Retrospective Analysis of Softball-Related Head and Facial Injuries Treated in United States Emergency Departments, 2013-2017.

Background: Softball is a popular sport played through both competitive and recreational leagues. While head and facial injuries are a known problem occurring from games, little is known about the frequency or mechanisms by which they occur.

Purpose: To analyze head/face injury diagnoses and to identify the mechanisms associated with such injuries.

Finite element simulation of early creep and wear in total hip arthroplasty.

Polyethylene wear particulate has been implicated in osteolytic lesion development and may lead to implant loosening and revision surgery. Wear in total hip arthroplasty is frequently estimated from patient radiographs by measurement of penetration of the femoral head into the polyethylene liner. Penetration, however, is multi-factorial, and includes components of wear and deformation due to creep.