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Foucher Sign

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Other Names

  • Foucher's Sign

Purpose

  • To evaluate the popliteal fossa for the presence of a Bakers Cyst

Description

  • Examine the popliteal fossa in full knee extension and in flexion[1]
  • Positive test
    • Cyst often will be firm in full knee extension, soft when the knee is flexed
    • Cyst compression between the medial head of the Gastrocnemius and Semimembranosus as they approximate each other and the joint capsule during knee extension
  • Useful to distinguish from other masses in the popliteal fossa
    • Palpation of the mass is unaffected by the knee position
    • Examples: popliteal artery aneurysms, ganglia, adventitial cysts, and tumors

Pathology


Evidence

  • Unknown

See Also


References

  1. Canoso JJ, Goldsmith MR, Gerzof SG, Wohlgethan JR. Foucher’s sign of the Baker’s cyst. Ann Rheum Dis. 1987;46:228-232.
Created by:
John Kiel on 16 December 2020 23:03:05
Authors:
Last edited:
16 December 2020 23:07:06
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