Illustration for lateral patellar dislocation

Case contributed by Dr Pujanwita Das Majumder

Figure 1: normal orientation of patellofemoral components in extension.
Figure 2: impaction of medial aspect of patella against lateral femoral condyle following injury

Figure 3: recoiling of patella

Case Discussion

Sites for retinacular injury are as follows:

  • at patellar insertion,
  • at midsubstance, or
  • within vastus medlalis obliquus muscle.


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Case information

rID: 27275
Published: 26th Jan 2014
Last edited: 29th Aug 2015
Tag: pdm, diagram
Inclusion in quiz mode: Excluded

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