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
Kocher Langenbeck approach for emergency acetabular fixation is done in all Except: 
Select and explain. 
A. Open fracture, B. Progressive sciatic nerve injury, C. Recurrent dislocation inspite of closed reduction and traction, D. Morel-Lavallee lesion
D: Morel-Lavallee lesion
Answer: D: Morel-Lavallee lesion 
Explanation: D. i.e. Morel Lavalle lesion