This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Orthopaedics
Triangular relation of elbow is maintained in: 
Select and explain. 
A. Fracture ulna, B. Anterior dislocation of elbow, C. Posterior dislocation of elbow, D. Supracondylar fracture of humerus
D: Supracondylar fracture of humerus
Answer: D: Supracondylar fracture of humerus 
Explanation: Triangular relation of elbow includes medial epicondyle, lateral epicondyle and tip of olecranon. The relationship is destroyed by dislocations of elbow. It is maintained in supracondylar fracture of Humerus (occurs above elbow joint)