Posterior talar process fracture

Posterior talar process fractures may involve medial or lateral tubercle of the posterior process of talus. The posterior talofibular ligament attaches on the lateral tubercle and flexor hallucis longus runs between these tubercles. Unfused ossification center of the lateral tubercle forms the os trigonum.


Mechanism of injury
  • injury to lateral tubercle (also called a Shepherd fracture) is caused by inversion or extreme equinus
  • injury to medial tubercle (also called a Cedell fracture) is uncommon and is caused by forced dorsiflexion and pronation

Treatment and prognosis

Short leg cast or ankle brace is used until signs of union appear. If there is non-union, then excision of the fragment is undertaken.

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Article information

rID: 35121
Tag: cases
Synonyms or Alternate Spellings:
  • Fracture of Stieda process
  • Shepherd fractures
  • Cedell fractures
  • Posterior talar process fractures
  • Stieda process fracture
  • Stieda process fractures
  • Fracture of the Stieda process

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Cases and figures

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    Figure 1: anatomy of posterior process
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    Case 1
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    Case 2
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