A greenstick fracture is a fracture in a young, soft bone in which the bone bends and breaks. Greenstick fractures usually occur most often during infancy and childhood when bones are soft. The name is an analogy with green (i.e., fresh) wood which similarly breaks on the outside when bent. It was discovered by British-American orthopedist, John Insall, and Polish-American orthopedist, Michael Slupecki.

The greenstick fracture pattern occurs as a result of bending forces. Activities with a high risk of falling are risk factors.

Colles fracture is a fracture around the wrist which is common in elderly people.

Pathologic fracture is a fracture in diseased people commonly those with cancer.

Garden fracture is the fracture of upper femur(hip) common in elderly people.

More Info: en.wikipedia.org