Intended for healthcare professionals

Endgames Spot Diagnosis

An incidental finding on a knee radiograph

BMJ 2018; 361 doi: (Published 12 April 2018) Cite this as: BMJ 2018;361:k596
  1. James Russell, radiology registrar,
  2. Joanna Farrant, consultant radiologist
  1. Royal Free London NHS Foundation Trust, London, UK
  1. Correspondence to J Russell james.russell4{at}
Video 1

MRI scan

A 24 year old man attended the emergency department with pain in the lateral left knee after intercepting a pass playing football. Plain anteroposterior and lateral radiographs of the knee were obtained, which ruled out the presence of a fracture or lipohaemarthrosis, but instead showed several distinctive lesions (fig 1). The patient was referred for a magnetic resonance imaging (MRI) scan of the knee because of ongoing pain and loss of function. The MRI showed a complex tear of the posterior …

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