This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ohopaedics Q Bank, Subject name: Orthopaedics
True about Salter harris classification is- 
Select and explain. 
A. Thurston Holland sign is seen in type IV injury, B. Type I injury has worst prognosis, C. Type II injury is fracture of necessity, D. Physeal crushing injury occurs in type V
D: Physeal crushing injury occurs in type V
Answer: D: Physeal crushing injury occurs in type V 
Explanation: Salter-Harris types Feature 1 Fracture line is entirely with in Physis causing epiphyseal slip 2 Fracture line extends from physis into the Metaphysis (Thurston-Holland's fragment sign) 3 Fracture line extends from physis into the Epiphysis causing epiphyseal split 4 Fracture line extends across the Epiphysis, (aicular surface), Physis, and metaphysis 5 Crush injury of physis with initially normal X-rays