ulna


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Related to ulna: styloid process of ulna, Ulta

ulna

 [ul´nah] (L.)
the inner and larger bone of the forearm, on the side opposite the thumb. It articulates with the humerus and with the head of the radius at its proximal end; with the radius and bones of the carpus at the distal end.

ul·na

, gen. and pl.

ul·nae

(ŭl'nă, ŭl'nē), [TA]
The medial and larger of the two bones of the forearm.
Synonym(s): cubitus (2)
[L. elbow, arm, fr. G. ōlenē]

ulna

/ul·na/ (ul´nah) pl. ul´nae   [L.] the inner and larger bone of the forearm.

ulna

(ŭl′nə)
n. pl. ul·nas or ul·nae (-nē)
1. The bone extending from the elbow to the wrist on the side opposite to the thumb in humans.
2. A corresponding bone in the forelimb of other vertebrates.

ul′nar adj.

ulna

[ul′nə]
Etymology: L, elbow
the bone on the medial or little finger side of the forearm, lying parallel with the radius. Its proximal end bulges into the olecranon and the coronoid processes and dips into the trochlear and radial notches. The ulna articulates with the humerus and the radius. Also called elbow bone. See also radius.

ul·na

pl. ulnae (ŭl'nă, -nē) [TA]
The medial and larger of the two bones of the forearm.
Synonym(s): cubitus (2) [TA] .
[L. elbow, arm, fr. G. ōlenē]

ulna

One of the pair of forearm long bones. The ulna is on the little finger side. At its upper end it has a hook-like process, the olecranon, that fits into a hollow at the back of the lower end of the upper arm bone (the humerus) and prevents the elbow from over-extending. When the hand is turned on the long axis of the arm, the radius bone rotates around the ulna.

ulna

the posterior of the two bones of the forearm of TETRAPODS which articulates proximally with the HUMERUS and distally with the CARPALS. see PENTADACTYL LIMB.
Figure 1: The nervous system.

ulna

larger of the two forearm bones, articulating at the elbow with the humerus and at the wrist with the carpal bones. ulnar adj in descriptions of forearm structures: on or towards the side of the ulna, i.e. the fifth finger side. Figure 1.

ul·na

(ŭl'nă, -nē) [TA]
The medial and larger of the two bones of the forearm.
Synonym(s): cubitus (2) [TA] .
[L. elbow, arm, fr. G. ōlenē]

ulna

together with the radius, forms the skeleton of the forearm. See Table 10.
References in periodicals archive ?
Instability of the distal ulna following the Darrach is a significant complication of the procedure, resulting in painful radioulnar convergence.
11) The ulna nerve must be examined to check for anterior subluxation to avoid inadvertent damage to the nerve when injecting.
This species was based on a nearly complete carpometacarpus and referred ulna and coracoids.
Other than the isolated ulna nerve parasthesia there were no other signs noted and for the remainder of the night analgesia was adequate.
Ulnar stress fractures have been reported in athletes who exert substantial physical stresses on the ulna by repetitive excessive pronation during sports.
For the next step we used the ANSYS program for the discretisation by means of the finite elements method of the spatial structure of the ulna and radius bones (Tarnita et al, 2006).
She was taken to the operating room and underwent anatomic open reduction and internal fixation of the ulna but was found to have a persistent radial head anterior dislocation.
Fresh bovine bones such as femur, tibia, humerus, radius/ ulna (fore arm), metacarpus, metatarsus, scapula, skull, pelvis, rib and backbone were collected from slaughterhouse for present investigations.
It supports and stabilizes the distal radius at the end of the ulna and adds reproducible function and comfort, unlike previously available treatments.
Although originally developed for laboratory use, the sulfur by UV Fluorescence (S by UVF) has increasingly become the leading on-line analyzer technique for ulna low sulfur concentrations in fuel applications.
Extensor" indicates its function (extend the wrist), "carpi" indicates that it affects the carpals (wrist bones), and "ulnaris" indicates that it runs along the ulna, the long forearm bone on the little finger side.