Skeletal Radiology

, Volume 47, Issue 5, pp 699–702 | Cite as

Avulsion fracture of an ossified pes anserinus tendon post-lateral patellar dislocation

  • Omar M. Albtoush
  • Abtehag A. Taib
  • Marius Horger
  • Fabian Springer
Case Report


The pes anserinus is a common tendon comprising the tendinous insertions of the sartorius, gracilis, and semitendinosus muscles. It inserts at the anteromedial aspect of the tibia and plays a significant role in stabilization of the medial side of the knee joint. The current article presents a case with recurrent lateral patellar dislocations causing chronic stress along the medial knee stabilizers and consecutive enthesophyte formation at the insertion of the pes anserinus tendon that showed a transverse fracture upon a subsequent incident of traumatic lateral patellar dislocation. Avulsion injuries of the pes anserinus tendon are rarely encountered, and to our knowledge, association with recurrent lateral patellar dislocations has not been described before.


Pes anserinus Avulsion Patellar dislocation Semitendinosus Gracilis Sartorius 


Compliance with ethical standards

Conflicts of interest

The authors declare that they have no conflicts of interest.


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Copyright information

© ISS 2017

Authors and Affiliations

  • Omar M. Albtoush
    • 1
    • 2
  • Abtehag A. Taib
    • 3
  • Marius Horger
    • 1
  • Fabian Springer
    • 1
  1. 1.Department of RadiologyEberhard-Karls-University TübingenTübingenGermany
  2. 2.Department of Diagnostic and Interventional RadiologyUniversity of JordanAmmanJordan
  3. 3.Department of Radiology, Faculty of MedicineBenghazi UniversityBernghaziLibya

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