About half are the result of major trauma, the other half as a result of minor trauma. Major trauma may include mechanisms such as falls from a significant height, motor vehicle collisions, or a pedestrian being hit by a motor vehicle. Cases due to major trauma often have other injuries. Minor trauma may include tripping while walking or while playing sports. Risk factors include obesity. The condition may also occur in a number of genetic disorders such as Ellis–van Creveld syndrome, Larsen syndrome, and Ehlers–Danlos syndrome.
Knee dislocation
Hip dislocation
Medial knee injuries
Elbow fracture
Acetabular fracture
Hip fracture
Femoral fracture
Patella fracture