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What is A 4 years old child suffered from a fall on outstretched hand.  X rays revealed a fracture with the fracture line at the physes with a small metaphyseal fragment.  There was no epiphyseal fracture.  What type of injury by Salter harris Classification is this? and explain in detail?
(Refer: Mohindra’s Fundamentals of Orthopedics, 2nd edition, pg no. 510)

Type II: the fracture involves the physis and a triangle of metaphyseal bone (Thurston Holland sign).  This is the commonest type of epiphyseal injury accounting for 73 percent of cases over 10 years of age.