Salter-Harris type II fracture
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Salter-Harris type II fractures are the most common type of physeal fractures that occur in children. There is a fracture that extends through the physis and into a portion of the metaphysis. A triangular metaphyseal fragment, otherwise known as the Thurston Holland fragment, will be left intact.
Approximately 75% of physeal fractures will be a Salter-Harris type II with 33-50% occurring at the distal radius. Other common fracture sites are the distal tibia, distal fibula and, phalanges 2,3.
In reality, the majority of fractures that involve the physis have at least a small fragment of metaphysis associated with them and are therefore type II injuries.
- fracture through the physis
- Thurston Holland fragment
- angulation, displacement and rotation may occur