Ligamentum teres avulsion fracture of femoral head

Case contributed by Assoc Prof Craig Hacking


Sudden onset left groin pain whilst running.

Patient Data

Age: 25 years
Gender: Male

Small avulsion fragment in the medial left femoral head adjacent to the fovea, at the presumed attachment of the ligamentum teres.

There is an old ununited avulsion fracture of the left lesser trochanter. The left superolateral acetabular margin is irregular suggesting previous trauma, however, no acute fracture is demonstrated.

CT confirms an acute avulsion fracture of the left femoral head medially at the superoanterior aspect of the fovea capitis where the ligamentum teres inserts. Acute left hip joint effusion noted.

There is an old ununited fracture of the left superoposterior acetabular margin. Old ununited avulsion fracture of the left lesser trochanter also demonstrated.

Case Discussion

Ligamentum teres avulsion fractures are rare; however, rupture and tears of the ligament are an underdiagnosed injury, often only found at arthroscopy.

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Case information

rID: 80425
Published: 24th Jul 2020
Last edited: 1st May 2021
Inclusion in quiz mode: Included

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