This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital Dislocation of Hip (C.D.H.), Subject name: Orthopaedics
Von-Rosen's splint used in: 
Select and explain. 
A. Congenital dislocation of hip joint, B. Congenital taloequinovarus, C. Tibia vera, D. Congenital coxa-vara
A: Congenital dislocation of hip joint
Answer: A: Congenital dislocation of hip joint 
Explanation: (Congenital dislocation of hip joint) (203-M)Congenital dislocation of hip(a) Plaster cast - A frog leg (Lorenz cast) or Bachelor cast(b) Splint - Von Rosen's splint