It is the muscles of the olecranon which give way.
Displacement is not likely to take place except when it is well up toward the olecranon or its tuberosity, the upper segment of the bone being in that case likely to be drawn upward.
A fracture of the olecranon is less amenable to treatment, and promises little better than a ligamentous union.
The epiphysis of the olecranon being so distinct and showing no fusion, indicates the youth of this soldier, whose age could not have been more than 16 years.
The olecranon process of the right ulna rests on the photographic plate, with the forearm in semipronation, so that the shadow of the radius falls nearly in line with that of the ulna.
Draw and state the precise position of the hyoid bone, the clavicle, the calcaneum, and the olecranon process.
The ulna is best seen at its proximal end in the specimens from the Cambridge Greensand, where there is a terminal olecranon ossification forming an oblique articulation, which frequently comes away and is lost.
It should be mentioned that there is a proximal epiphysis or separate bone to the first phalange, adjacent to the pulley joint of the metacarpal bone, which is like the separate olecranon process of the ulna of the fore-arm.
It may originate as an inflammation of the olecranon bursa, or may invade the bursa secondarily.
The patient himself, or the surgeon, may discover the loose body and feel it roll beneath his fingers, especially if it is lodged in the supra-patellar pouch in the knee, or on one or other side of the olecranon in the elbow.
From the olecranon process the finger may be run down the posterior border of the ulna, which is subcutaneous as far as the styloid process at the lower end.
It is prevented from moving too far back by a hook-like projection called the olecranon process, which makes the sharp point of the elbow.
Turn the hand over with the palm upwards, and the edge of the ulna can be felt from the olecranon to the prominent knob (styloid process) at the wrist.
In the case of the ulna, pure perforation of the olecranon process, without obvious evidence of implication of the elbow, was seen on several occasions.
Entry, over the external margin of the radius at the centre of the forearm; exit, at the inner margin of the olecranon 1-1/2 inch below the tip.
I saw several cases of pure perforation of the olecranon without any signs of implication of the elbow-joint.
A considerable amount of comminution of the olecranon resulted, and when the man came into hospital some ten days later the joint was suppurating.
Dupuytren used to saw through the ulna, leaving the olecranon attached.
Upper extremity of the ulna, called the olecranon process, which forms the point of the elbow.
The olecranon process of the ulna and insertion of the triceps.
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 Bursa over the Olecranon Process is liable to enlargement, by gradual accumulation of the secretion, in consequence of habitual pressure on the elbow.
All soft parts in this line are divided, and then the saw is applied to the olecranon process.
The olecranon projects behind, but the mutual relations of the bony points of the elbow are unaltered.
Bennett, in the majority--this dislocation is incomplete, the coronoid process resting at the level of the trochlea, and the backward projection of the olecranon being scarcely appreciable.
The two epicondyles are practically on the same level, and a line joining them behind passes just above the tip of the olecranonwhen the arm is fully extended.
In this way fracture of the olecranon or of the clavicle may be simulated.
In carrying out the movements, the tip of the olecranon is pressed down with the thumb, so that it is obliged to follow the movements of the ulna, and is prevented from adhering to the humerus.
Forward Dislocation of Elbow, with Fracture of Olecranon 93 40.
Separation of the olecranon epiphysis is one of the rarest forms of epiphysial detachment (Poland).
The chief obstacle to reduction is the spasmodic contraction of the muscles passing over the joint, and, in the backward variety, the hitching of the coronoid process against the edge of the olecranon fossa.
The olecranonand the triceps tendon form a marked prominence on the back of the elbow, the tip of the olecranon lying above and behind the condyles.
Radiogram of Fracture of Olecranon Process, showing marked degree of displacement.
In transverse fractures of the patella or of the olecranon there is often distraction or pulling apart of the fragments (Fig.
On flexing the joint, the tip of the olecranon gradually passes to the distal side of this line, and when the joint is fully flexed the tip of the olecranon is found to have passed through half a circle.
The radius and ulna pass backward, the coronoid process coming to rest opposite the olecranon fossa behind the humerus, and the head of the radius behind the lateral condyle.
The olecranon is frequently fractured at the same time (Fig.
The triangular area between this stiff edge and the side of the body was occupied by a thin, soft, wrinkled skin, in the middle of which the olecranon could be felt.
In the Tylopoda, though the ulna is complete and its distal end is often distinct, it has coalesced with the radius throughout its whole length; the olecranon is generally very large.
It is expanded at each end and has a prominent internal condyle, a small olecranon fossa, and no ent-epicondylar foramen.
Sometimes, as in the Horse and Giraffe, it is reduced to the olecranon and to a very slender descending process which does not nearly reach the carpus.
The posterior of these, the =olecranon fossa=, is much the deeper, and receives the olecranon process of the ulna when the arm is extended.
Its proximal end is expanded, forming two surfaces which articulate with the trochlea of the humerus; behind them it is drawn out into a short blunt =olecranon process=.
The =ulna= or postaxial bone is somewhat expanded distally, but is not drawn out proximally into an olecranon process.
In the Carnivora vera the humerus has large tuberosities, a prominent deltoid ridge and a deep olecranon fossa.
B) has a very similar development throughout its whole length, while the ulna has a large olecranon (fig.
The ulna of Notoryctes has an enormous hooked olecranon which causes the bone to be nearly twice as long as the radius.
The olecranon fossa is deep and there is no ent-epicondylar foramen.
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.
Its proximal end is large and convex, but is not drawn out into an olecranon process.
This movement being limited only by the contact of the tip of the olecranon with the bottom of the olecranon fossa of the humerus, the forearm is enabled, in this case, to move until it is in line with the arm.
The olecranon process of the ulna being slightly developed, it follows that the olecranon fossa is not large; neither is the coronoid.
Because of this projection backwards, the cavity situated on the posterior surface of the inferior extremity, the olecranon fossa, is very deep, more so than in the humerus of man.
Sometimes it is inserted into the olecranon process, at other times into the antibrachial aponeurosis or the epitrochlea.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "olecranon" in a variety of sentences. We hope that you will now be able to make sentences using this word.
