Arcade of Frohse

The arcade of Frohse (pronounced "\ Frəʊs \" to rhyme with "crows") is also known as the supinator arch.

The arcade is formed by a fibrous band between the two heads of the supinator muscle. The deep branch of the radial nerve passes beneath the arcade and can become entrapped, leading to posterior interosseous nerve syndrome.

Caution should be exercised when evaluating the deep branch of the radial nerve since it may change shape after passing under the arcade and still be normal 2.

History and etymology

It is named after the German anatomist F Frohse 3.


Upper limb anatomy
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Article Information

rID: 32424
Section: Anatomy
Synonyms or Alternate Spellings:
  • Supinator arch

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