Bylateral femur fractures are most often associated by which type of motorcycle accidents?

Bilateral femur fractures are most often associated with motorcycle accidents that involve high-speed collisions or impacts, particularly those where the rider is thrown from the bike or collides with another vehicle or object. These types of accidents result in significant forces that can lead to severe lower limb injuries, including fractures. Additionally, accidents involving losing control of the motorcycle or crashing into stationary objects can also lead to such injuries.