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
Kumar, a 31 yrs old motorcyclist sustained injury over his Right hip joint. X-ray revealed a posterior dislocation of the Right hip joint. The clinical attitude of the affected lower limb will be: 
Select and explain. 
A. External rotation, extension and abduction, B. Internal rotation, flexion and adduction, C. Internal rotation, extension and abduction, D. External rotation, flexion and abduction
B: Internal rotation, flexion and adduction
Answer: B: Internal rotation, flexion and adduction 
Explanation: In posterior dislocation of hip, the limb is held in flexion, adduction and internal rotation. It's the opposite in anterior dislocation. The treatment is emergency reduction of the dislocated hip. Ref: Essential Ohopedics By J Maheswari, 2nd Edition, Pages 181-183