Patella fracture

Dr Yair Glick and R Bronson et al.

Patella fracture is one of the common knee injuries usually post direct trauma to the patella or sudden forceful contraction of the quadriceps muscles in the context of a sports injury.

Patients present with marked swelling and pain over the patella with point tenderness and marked reduction in extension strength. Usually, there is a large joint effusion or haemarthrosis.

There are different causes of patella fracture:

Some fractures are more subtle and need to be differentiated from normal variants.

For the treatment of transverse fractures, the most widely accepted method is modified tension band wiring (K wire technique).

The main differential is of multipartite patella, where there is a failure of fusion of secondary ossification centres. The unfused fragments are almost always in the superolateral quadrant of the patella. With a multipartite patella, the volume of the true patella plus that of the smaller ossification centres is greater than that expected of a normal patella. With a patellar fracture, the volume of the fractured components is equivalent to that of a normal patella.

Fractures
Knee pathology

The knee is a complex synovial joint that can be affected by a range of pathologies:

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Article information

rID: 1357
Tag: stub, refs
Synonyms or Alternate Spellings:
  • Patellar fracture
  • Fractured Patella
  • Fracture of patella
  • Patella fractures
  • Fracture of the patella

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