This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impotency, Virginity, pregnancy & aboion, Subject name: Forensic Medicine
Which of the following is used in rape victims to determine of rupture of hymen and whether rupture is recent or old? 
Select and explain. 
A. Gaba rod, B. Gram rod, C. Cylinder rod, D. Glaister Keen rod
D: Glaister Keen rod
Answer: D: Glaister Keen rod 
Explanation: Solution: Glaister Keen rod is used to determine degree of rupture of hymen and whether rupture is recent or old. Signs of recent rupture are ragged tears in the hymen with edema and hemorrhage but absence of epithelial healing. The below image shows Glaister Keen Rod: