system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
An old lady had a history of fall in bathroom once and couldn't move. Afterwards, she had leg in externally rotated position. There was tenderness in Scarpa's triangle and limb movement could not been done due to pain. No hip fracture was seen on X-Ray. Next step
assistant
The correct answer is  Ans is 'a' i.e. MRI "Impacted fractures may be extremely difficult to discern on plain x-ray. If there is a fracture it will show up on MRI or a bone scan after a few days. "- ApleyHistory of fall, leg in externally rotated position and tenderness in Scarpa's triangle highly suggest fracture neck femur.An impacted, undisplaced fracture is likely to miss on an x-ray. An MRI or a bone scan would be needed to diagnose the lesion.