Arcade of Frohse

The arcade of Frohse (pronounced "\ˈfʁoːzə \") 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 accompanied by vessels known as the leash of Henry.

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.

The deep branch of the radial nerve may become entrapped in the arcade of Frohse, leading to posterior interosseous nerve syndrome.

It is named after the German anatomist Fritz Frohse (1871-1916) 3.

Anatomy: Upper limb

Anatomy: Upper limb

Article information

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

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Cases and figures

  • Figure 1
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