<prompt> Watson Jones operation is done for:PolioMuscle paralysisNeglected clubfootChronic ankle instability.  <response>: D. i.e. Chronic ankle instability Smith-Peterson anterolateral approach; Watson Jones, Hardings, Harris lateral approach; Moores posterior approach of hip joint are used for hip surgeries. Chronic ankle instability can be satisfactorily treated by Was ton- Jones operationQ. Watson- Jones is also a lateral approach to the hip joint, which can be used for hip replacement although rarely as more commonly used approaches are Moores posterior and Hardinges antero-lateral approach. 