The radius is curved and has a narrow proximal, and expanded distal end, the ulna is straighter than the radius and has the distal end much smaller than the proximal; the olecranon is not much developed.
The radius is always large at both ends, but the condition of the ulna is very variable.
The epiphyses forming both ends of the radius, and the distal end of the ulna are large, while that at the proximal end of the ulna is small, and forms only the end of the olecranon.
The ulnais vestigial, consisting only of a proximal end ankylosed to the radius.
In the large Condylarthra the humerus has an ent-epicondylar foramen, and the radius and ulna are stout bones nearly equal in size.
The radius and ulna are not ankylosed, but are incapable of any rotatory movement.
The posterior of these, the =olecranon fossa=, is much the deeper, and receives the olecranon process of the ulna when the arm is extended.
Near its proximal end the ulnais marked by a deep =sigmoid notch=, which bears on its inner side a concave surface (fig.
The radius and ulna are flat expanded bones fixed parallel to one another, but the ulna has a definite olecranon.
The anterior limb has four well-developed digits and a vestigial pollex, and is of moderate length; the radius and ulna have fused.
The ulna is much broader distally and its whole shape is different.
Radius: Almost perfectly straight, but a little inclined toward ulna at oblique proximal end; scarcely expanded at distal end, which is lower externally than internally.
Carpals: Five; two on ulna side, two median and one on radial side in line with first metacarpal.
The ulna is complete and quite distinct from the radius, though firmly united with the latter.
The ulna is slightly more distinct than in the horse; and the whole length of it, as a very slender shaft, intimately united with the radius, is completely traceable.
PLATE 4, Figure 18, “tibia and fibula” are misprinted for “ulna and radius.
The ULNA is the larger bone of the fore-arm, lies on the inside, and extends from elbow to wrist.
The posterior surface of the forearm is next to the plate, as the distinct outline of the styloid process of the ulna and the posterior border of the articular surface of the radius shows.
The missile was a rifle bullet with the reduced velocity of long range, passing transversely along the articulations of the elbow, fragmenting the radius and ulna and fissuring the humerus through both condyles.
This plate shows an attempt to wire the ulna in a clean wound.
This plate shows an attempt to wire the radius and ulna where the indications were rather doubtful.
The radius and ulna are parallel in the most natural position of supination.
The course of the bullet was anteroposterior through the ulna a little above the middle of the forearm, and fairly through the long axis.
Gunshot Fracture of the Radius andUlna in the Upper Third of the Forearm.
The course of the bullet at short range was transverse through the upper forearm, striking the radius in the center of the shaft and the ulna nearer the border.
The course of the missile was from within outward, ranging downward to the wrist, by deflection, after striking the ulna in its upper half.
Smaller fragments which received some of the energy of the missile have been carried along with it in turn, striking the ulna and carrying away smaller fragments from it and causing the laceration which marks the wound of exit.
The ulna to near the wrist was swollen enormously by purulent collections in its medullary canal.
The coronoid process of the ulna is occasionally broken off; there is no deformity during flexion of the elbow, but when the limb is extended, the olecranon is drawn upwards.
The accident is distinctly marked by the deformity, the absence of hard projection, and by the unusual space between the radius and ulna occupied by a soft and yielding swelling.
The radius and ulna had been fractured: the former had united, whilst a false joint had been formed betwixt the portions of the ulna.
Fracture of the olecranon process of the ulna is occasioned by falls on the point of the elbow; or the bone may be snapped asunder by powerful and sudden action of the triceps extensor cubiti, when the arm is much and quickly bent.
A prepollex rests against centrale 1; centralia 2 and 3 are fused; the radiale fuses with centrale 4, and the intermedium fuses with the ulnare; radius and ulna are fused with each other as in other frogs.
In the fore-limb the most noteworthy point is that the ulna has a convex posterior border as in the Creodonts, the same border in Phenacodus being concave.
The fibula no longer articulates with the calcaneum, but both that bone and the ulna are well developed.
It is interesting to observe that the posterior border of the ulna is convex, as in the Creodonts, and in the early Condylarthrous form Euprotogonia.
The radius and ulna are separate; so too are the tibia and fibula.
The radius and ulna are complete and separate bones, but the latter is somewhat reduced.
The radius is long and curved; the ulna rudimentary.
It is interesting to note that in the proportions of humerus to ulna this animal is more Lama-like than Horse-like.
The ulnaand the radius are specially compared with the same bones in the Bear tribe.
In both of these embryos it should be noted that the ulnais complete and separate from the radius.
The ulna was distinct from the radius, whereas in Chalicotherium the two are coalesced, or nearly so.
Both radius and ulna in the fore-limb, and tibia and fibula in the hind-limb, are well developed.
The radius and the ulna are completely separated, as are the carpals.
The ulna is slightly more distinct than in the horse; and the whole length of it, as a very slender shaft intimately united with the radius, is completely traceable.
The ulna is complete and quite distinct from that radius, though firmly united with the latter.
The radius and ulna (the two move together) must be pushed or pulled toward the humerus, or the humerus toward the radius and ulna.
If this string could be so made that every time you willed it so, it would shorten itself, it would pull the ulna up and would bend the arm; every time it slackened the arm would fall back into a straight position.
The tendon pulls at the radius, the radius with the ulna moves on the fulcrum of the humerus at the elbow-joint, and the arm is bent.
In a Negro in the lunatic asylum of Liverpool (says Mr. White) the ulna was twelve and a half inches, and the humerus only thirteen and a half.
Thus, in none of the measurements did the humerus exceed the ulna two inches, which in the Caucasian variety is the lowest number.
The capsular ligament is a large, loose membrane which encloses the articular portion of the humerus with the radius and ulna and also the radioulnar articulation.
Fractures of the ulna in the horse are not common in spite of the exposed position of the olecranon.
The capsular ligament of the elbow joint is usually involved in the injury because fracture of the ulna may directly extend within the capsular ligament.
The ulna and radius are not united with the humerus.
Limb-bones short and very stout, the ulna being shorter than the humerus, and having very prominent tubercles for the secondaries; cnemial crest of tibia greatly developed.
Allied to Aquila, from which it is distinguished by the ulna being relatively shorter and the tarso-metatarsus stouter.
As to the remains of the upper extremities, those which are in my possession consist merely of a fragment of an ulna and of a radius (Plate III.
Also a perfect right radius of corresponding dimensions, and the upper-third of a right ulna corresponding to the humerus and radius.
The large process at the proximal end of the ulna which projects behind the articulation with the humerus and forms the bony prominence of the elbow.
One of the bones or cartilages of the carpus, which articulates with the ulnaand corresponds to the cuneiform in man.
The ulna and radius in the rorquals are also comparatively longer than in the baleen whales.
The forearm and the lower leg each had still two separate bones (ulna and radius, fibula and tibia), neither pair having been replaced with a single strong bone, as in the leg of the horse.
While these changes were in progress the radius andulna of the fore limb became consolidated to a single bone; and in the hind limb the fibula dwindled to a splint, while the tibia was correspondingly enlarged.
Thus, Figure 8 shows the deformity from an old fracture of the ulna (one of the bones of the forearm) very clearly.
The ulnais complete and much larger than in any of the Equidoe, while it is more slender than in most of the true Paloeotheria; it is fixedly united, but not ankylosed, with the radius.
The shaft of the ulna is reduced to a mere style, ankylosed throughout nearly its whole length with the radius, and appearing to be little more than a ridge on the surface of the latter bone until it is carefully examined.
Thus the ulnais complete throughout, and its shaft is not a mere rudiment, fused into one bone with the radius.
The ulna is complete and much larger than in any of the Equidae, while it is more slender than in most of the true Palaeotheria; it is fixedly united, but not ankylosed, with the radius.
The shaft of the ulna is reduced to a mere style ankylosed throughout nearly its whole length with the radius, and appearing to be little more than a ridge on the surface of the latter bone until it is carefully examined.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ulna" in a variety of sentences. We hope that you will now be able to make sentences using this word.
