Third head of gastrocnemius

Case contributed by Dr Mostafa El-Feky


Right knee pain.

Patient Data

Age: 40 years
Gender: Female

Both knee joints

Unremarkable both knee joints radiograph.


Right knee joint

Mild knee joint effusion.

Incidentally noted, accessory third head gastrocnemius muscle.

Case Discussion

Accessory third head gastrocnemius muscle, could be responsible for patient's symptoms as it may compress popliteal artery causing claudication, and so the possibility of popliteal artery entrapment syndrome (PAES) should be clinically assessed.

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Case information

rID: 77123
Published: 14th Oct 2020
Last edited: 29th Oct 2020
Inclusion in quiz mode: Included
Institution: Dar El Ashaa Center

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