During a football game, a player fractures his leg bone when his foot plants into the turf, but several opposing players continue to push him forward. the doctor explains that the diagonal break across the bone was due to intense twisting forces. is the type of fracture involved in this example.

The type of bone fractures can be classified in many ways, but the more important are:

Stable fracture: bones are barely out of place.Open fracture: The skin is pierced by the bone or by a blow.Transverse fracture: it's an horizontal line fracture.Oblique fracture: it's the fracture which has an angled pattern.Spiral fracture: It's also called torsion fracture, because it's the fracture caused by a rotating force, which is involve in football.Comminuted fracture: It's when the bone is broke into three or more parts.Stress fracture: this is common in sports, because it's caused by the excess of repetitive motion.

In this case, the fracture is most likely to be a spiral fracture, because the slight initial fracture got worse but the torsion applied by the player, since he continued playing.