Irreducible, incarcerated vertical dislocation of patella into a Hoffa fracture

We report a case of a 20-year-old male who presented with swelling and pain in the right knee following a motor cycle accident. Radiological evaluation using the computed tomography revealed a patellar dislocation with a concomitant Hoffa fracture. Patella was rotated around the vertical axis and was incarcerated into the Hoffa fracture. This is a very rare injury and first of its kind to be reported. The difficulties in diagnosis, mechanism of injury and management have been discussed. We feel closed reduction of such an injury is likely to fail and open reduction is recommended.
Source: Table of Contents : Indian Journal of Orthopaedics : 2007 - 41(1) - Category: Orthopaedics Authors: Source Type: research