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Causes/features Diagnosis Management
  • Direct blow to the knee can cause fracture of patella.
  • Indirect blow to the quadriceps as in stumbling and falling.
  • May be a crack, transverse or comminuted depending on how severe the blow to the knee is from low to severe.
  • Road traffic accident
 
  • Closed reduction if over 45 years if transverse.
  • Plaster cast for 6-10 weeks
  • Open reduction with plate and screw internal fixation under 45 years and if reduction is impossible. Consider excision of patella in difficult cases. Sometimes just a fragment can be excised, leaving the main one.
  • In crack fracture, plaster is placed for 4 weeks. Aspirate hemathroses.
  • In comminution, excise displaced patella fragment if under 45 years. Above 45 treat as crack fracture.
Comminuted Crack Transverse
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Creator: OLuwole Ogunranti