Parrot beak meniscal tear

Parrot beak meniscal tear is a type of radial meniscal tear with a more oblique course, which on axial images gives the characteristic appearance of a curved V, similar to a parrot's beak. As it is obliquely oriented in relation to the coronal and sagittal plane, it results in a marching cleft sign on sagittal images. This type of tear is usually symptomatic, as the partially torn meniscal flap in unstable. 

Practical points

Some authors advise that the term should be reserved for arthroscopy reports, and not used in MRI reports as a meniscal tear pattern descriptor 1.

Knee pathology

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

Article information

rID: 39386
Section: Signs
Synonyms or Alternate Spellings:
  • Parrot beak tears
  • Oblique flap tear with a horizontal component
  • Parrot beak meniscal tears
  • Parrot beak tear of meniscus

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Cases and figures

  • Case 1
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  • Case 2
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