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The posterior interosseous nerve (or dorsal interosseous nerve/deep radial nerve) is a nerve in the forearm. It is the continuation of the deep branch of the radial nerve, after this has crossed the supinator muscle. It is considerably diminished in size compared to the deep branch of the radial nerve.
Unlike carpal tunnel syndrome, radial tunnel syndrome does not present tingling or numbness, since the posterior interosseous nerve mainly affects motor function. [5] This problem is often caused by: bone tumors, injury (specifically fractures of the forearm), noncancerous fatty tumors (lipomas), and inflammation of surrounding tissue. [5]
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]
The deep branch of the radial nerve (also known as posterior interosseous nerve by some authors) [5] [6]) pierces the supinator muscle, winds around the radius under the cover of supinator to reach posterior of forearm where it again pierces supinator and after which it is known as the posterior interosseous nerve. It pierces the posterior ...
Nerve compression syndrome, or compression neuropathy, or nerve entrapment syndrome, is a medical condition caused by chronic, direct pressure on a peripheral nerve. [1] It is known colloquially as a trapped nerve , though this may also refer to nerve root compression (by a herniated disc , for example).
In some cases of spontaneous paralysis of the nerve, releasing this fibrous band released pressure on the nerve and restored function [3] Considerably diminished in size, it descends as the posterior interosseous nerve. For some authors, the deep branch of the radial nerve is the same as the posterior interosseous nerve. [4] [5]
The increased pressure in the synovial sheath is known to directly or indirectly compress the posterior interosseous nerve of radial nerve. [14] Also, the extra pressure causes synovitis which results in pain in the dorsal part of the wrist.
Median neuropathy at wrist (carpal tunnel syndrome) Proximal median neuropathy; Ulnar neuropathy at elbow; Ulnar neuropathy at wrist; Radial neuropathy at the spiral groove; in the axilla; superficial radial sensory neuropathy; posterior interosseous neuropathy; Suprascapular neuropathy; Axillary neuropathy; Musculocutaneous neuropathy; Long ...