This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2020, Subject name: Orthopaedics
Fish tail deformity in a child is seen after injury to? 
Select and explain. 
A. Distal Tibia, B. Distal Femur, C. Distal humerus, D. Distal Radius
C: Distal humerus
Answer: C: Distal humerus 
Explanation: Fishtail deformity of the elbowis characterized by a contour abnormality of the distal humerus, which develops when the lateral trochlear ossification centers fails to develop or resorbs. It is an uncommon complication usually following a distal humeral fracture in childhood.Whilst initially presumed to be a benign condition, long-term follow-up suggests that patients withfishtail deformityare prone to: functional impairment ongoing pain development of early osteoahrosis