Arcade of Frohse

Arcade of Frohse, sometimes called the supinator arch,^[1] is the most superior part of the superficial layer of the supinator muscle, and is a fibrous arch over the deep division of the radial nerve.

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Arcade of Frohse
Supinator muscle and deep division of radial nerve; right side, lateral view. 1. Extensor digitorum — 2. Lateral epicondyle — 3 & 10. Deep division of radial nerve — 4. Supinator (pars profunda, upper fibers) — 5. Arcade of Fröhse — 6. Bicipital tuberosity — 7. Supinator (pars superficialis) — 8. Oblique line of radius — 9. Supinator (pars profunda, lower fibers) — 11. Aponeurotic expansion of extensor digitorum. (After Charpy.)
Anatomical terms of muscle [edit on Wikidata]

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The arcade of Frohse is a site of interosseous posterior nerve entrapment,^[2] and is believed to play a role in causing progressive paralysis of the posterior interosseous nerve, both with and without injury.

The arcade of Frohse was named after German anatomist, Fritz Frohse (1871–1916).^{[citation needed]}