<prompt> A woman aged 60 yrs suffers a fall; her lower limb is extended and externally rotated; likely diagnosis is:Neck of femur fractureInterochanteric femur fracturePosterior dislocation of hipAnterior dislocation of hip  <response>: An aged woman presents with extended externally rotated lower limb following a fall indicates fracture of neck of femur. Ref: Essential Ohopedics By Maheshwari 2nd Edition, Page 197 ; Apleys System of Ohopaedics and Fractures, 8th Edition, Page 685 