This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
Watson Jones operation is done for? 
Select and explain. 
A. Neglected Club foot, B. Muscle paralysis, C. Valgus deformity, D. Hip replacement
D: Hip replacement
Answer: D: Hip replacement 
Explanation: Prosthesis of of the hip are used for the replacement of head of femur following non union and AVN. Hip can be approached either by anterior ( WATSON JONES) , Lateral ( Gibson&;s) or posterior ( Moore&;s or Southern&;s) approaches. REF:TB of ohopaedics - Ebnezar - 3rd edn - pg no 623.