Kager's triangle

Kager's triangle is a sharply marginated radiolucent triangle seen posteriorly on lateral radiographs of the ankle. It represents the Kager fat pad.

It is bordered anteriorly by the flexor hallucis longus (FHL) muscle and tendon, posteriorly by the Achilles tendon, and inferiorly by the calcaneus. The anteroinferior corner of the triangle is related to the posterior ankle joint, while posterolaterally it is related to the retrocalcaneal bursa

The alteration of it's radiographic appearance in the form of obliteration or distortion of its borders are subtle indicators of pathology involving the posterior ankle. 

Edit Article Share
URL of Article

Article Information:

rID: 1544
System: Musculoskeletal
Tags: stub, cases
Synonyms or Alternate Spellings:
  • Kager triangle
  • Drag
    Case 1: in black (also has a non-ossifying fibroma)
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert_accept

    Error Unable to process the form. Check for errors and try again.

    Alert_accept Thank you for updating your details.