ulna

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Related to ulnar: ulnar nerve, ulnar artery

ulna:

see armarm,
upper limb in humans. Three long bones form the framework of the arm: the humerus of the upper arm, and the radius (outer bone) and ulna (inner bone) of the forearm.
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ulna

[′əl·nə]
(anatomy)
The larger of the two bones of the forearm or forelimb in vertebrates; articulates proximally with the humerus and radius and distally with the radius.

ulna

1. the inner and longer of the two bones of the human forearm
2. the corresponding bone in other vertebrates
References in periodicals archive ?
He had loss of sensation over the extensor surface of forearms, hands and ulnar side of both palms.
Patients will typically endorse pain along the ulnar aspect of the thumb MCP joint.
Table 1 shows the results of motor NCS in median, ulnar, common peroneal, and posterior tibial nerves.
Intermittent paresthesia, numbness and formication on the fifth finger and ulnar side of the fourth finger are frequent early symptoms.
Ulnar motor latency is usually unaffected in mild CTS, while ulnar sensory latency rises (27,28).
The CMAPs amplitude (0.2 mV- the lower limit of ulnar CMAP is 8.7 mV according to our EMG laboratory) were significantly decreased at all site of stimulations.
Its humeral head is small, and originates from the medial epicondyle; the origin of the ulnar head is extensive, and it attaches to the medial margin of the olecranon and proximal two-thirds of the posterior border of the ulna.
A mid-lateral incision was planned along the ulnar margin of the fifth finger, and two flaps, one volar- and one dorsal-based, were elevated in the shape of a book jacket.
Ulnar nerve entrapment at the elbow, generally defined as cubital tunnel syndrome, represents the second most common compression neuropathy of the upper extremity.[1],[2],[3] Etiology varies from either static factors due to bony and soft-tissue disorders (including osteoarthritis, cubitus valgus, ganglion, tumor, facial strictures, or accessory muscle) or dynamic components, such as minor repetitive injury secondary to increasing pressure within the cubital canal during elbow flexion or subluxation of the ulnar nerve.[2],[4],[5],[6]
In anteroposterior radiograph, varus of 20 degrees and paresthesias in the ulnar nerve territory were observed.
Antidromic sensory nerve action potentials (SNAP) for median and ulnar sensory nerves were recorded with standard ring electrodes.