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Get a kick out of this: the spectrum of knee extensor mechanism injuries
  1. Betty Tuong,
  2. Jeremy White,
  3. Luck Louis,
  4. Robyn Cairns,
  5. Gordon Andrews,
  6. Bruce B Forster
  1. Correspondence to Dr Bruce B Forster, Department of Radiology, University of British Columbia and University of British Columbia, Koerner Pavilion, UBC Hospital, 2211 Wesbrook Mall, Vancouver, British Columbia V6T 2B5, Canada; bruce.forster{at}


At the end of this article, the reader should be able to (1) recognise normal anatomy and anatomical variants of the extensor mechanism of the knee on various imaging modalities, including plain film, ultrasound and MRI; (2) diagnose a broad spectrum of EM injuries in adult and paediatric patients including patellar and quadriceps tendinopathy, Osgood–Schlatter disease, Sindig–Larsen–Johansson syndrome, chondromalacia patellae and patellar fractures on various imaging modalities; and (3) appreciate the important role of imaging in the diagnosis of musculoskeletal injuries.

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  • Competing interests None.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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