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Ulnar Nerve Compression Syndromes MeSH Descriptor Data 2025
Ulnar neuropathies caused by mechanical compression of the nerve at any location from its origin at the BRACHIAL PLEXUS to its terminations in the hand. Common sites of compression include the retroepicondylar groove, cubital tunnel at the elbow (CUBITAL TUNNEL SYNDROME), and Guyon's canal at the wrist. Clinical features depend on the site of injury, but may include weakness or paralysis of wrist flexion, finger flexion, and ulnar innervated intrinsic hand muscles, and impaired sensation over the ulnar aspect of the hand, fifth finger, and ulnar half of the ring finger. (Joynt, Clinical Neurology, 1995, Ch51, p43)
Entry Term(s)
Entrapment Syndrome, Ulnar Nerve
External Compression Syndrome, Ulnar Nerve
Guyon Syndrome
Ulnar Nerve Compression
Ulnar Nerve Entrapment
Ulnar Nerve Entrapment Syndrome
Ulnar Nerve Entrapment at the Wrist
Ulnar Nerve External Compression Syndrome
Previous Indexing
Nerve Compression Syndromes (1968-1993)
Ulnar Nerve (1966-1993)
Public MeSH Note
2000; see ULNAR NERVE COMPRESSION SYNDROME 1994-1999
Ulnar neuropathies caused by mechanical compression of the nerve at any location from its origin at the BRACHIAL PLEXUS to its terminations in the hand. Common sites of compression include the retroepicondylar groove, cubital tunnel at the elbow (CUBITAL TUNNEL SYNDROME), and Guyon's canal at the wrist. Clinical features depend on the site of injury, but may include weakness or paralysis of wrist flexion, finger flexion, and ulnar innervated intrinsic hand muscles, and impaired sensation over the ulnar aspect of the hand, fifth finger, and ulnar half of the ring finger. (Joynt, Clinical Neurology, 1995, Ch51, p43)