Knee - Patellar fracture - Lateral

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Knee - Patellar fracture - Lateral

  • This image shows wide separation of the upper and lower poles of the patella

Knee - Patellar fracture - AP

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Knee - Patellar fracture - AP

  • A fractured patella is often less easily seen on the Anterior-Posterior (AP) view

Knee - Patellar fracture - AP

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Knee - Patellar fracture - AP

  • A patella fracture may be very subtle
  • The presence of a joint effusion (haemarthrosis or lipohaemarthrosis) in the context of trauma is a helpful indicator of a fracture

Knee - Patellar dislocation - AP

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Knee - Patellar dislocation - AP

  • The patella is laterally displaced

Page author: Salisbury NHS Foundation Trust UK (Read bio)

Last reviewed: November 2018