Non-displaced: bone ends retains normal position. Another words, the bone cracks but it still remains in its place.
Displaced: bone ends are out of normal alignment.
Complete: bone is broken all the way through
Incomplete: Bone is not broken all the way through
Linear: the fracture is parallel to the long axis of the bone
Transverse: The fracture is perpendicular to the long axis of the bone
Compound (open)- bone ends penetrate skin
Simple (closed): bone ends do not penetrate the skin
Comminuted: bone fragments into three or more pieces; common in elderly
Spiral: ragged break when bone is excessively twisted; common sports injury
Depressed: broken bone portion pressed inward; typical skull fracture
Compression: bone is crushed; common in porous bones
Epiphyseal: epipysis seperates from diaphysis along epipyseal line; occurs where cartilage cells are dying
Greenstick: incomplete fracture where one side of the bone breaks and the other side bends; common in children