This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular Trauma, Subject name: Ophthalmology
Blow out fracture of orbit involves 
Select and explain. 
A. Medial wall, B. Superior wall, C. Inferior wall, D. All the walls
C: Inferior wall
Answer: C: Inferior wall 
Explanation: Ans. (c) Inferior wallRef; Kanski 7/e, p. 873Blow out fracture is typically of the orbital floor, it may also involve the medial wall but always as a secondary involvement.