This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
A 10 year old injured her upper limb 2 years ago. She presents with valgus deformity of the elbow and paresthesias over the medial border of the hand. What is the likely diagnosis? 
Select and explain. 
A. Lateral condyle fracture humerus, B. Supracondylar fracture humerus, C. Medial condyle fracture humerus, D. Fracture of proximal ulna
A: Lateral condyle fracture humerus
Answer: A: Lateral condyle fracture humerus 
Explanation: Valgus deformity of the elbow & paresthesias over the medial border of the hand would suggest the fracture of lateral condyle of humerus. Ref: Operative Techniques in Pediatric Ohopaedics By John M. Flynn, Sam W. Wiesel, Pages 10-11 ; Surgery: Basic Science and Clinical Evidence By Jeffrey A. Noon, Philip S. Barie, Randall Bollinger, 2008, Page 2245