What is the olecranon?
The olecranon (oh-LEH-cruh-nahn) is part of the ulna bone at the elbow. It is the boney prominence or pointy tip that can be felt best with a bent elbow.
What is an olecranon fracture of the elbow?
Olecranon Fracture. Olecranon fractures are common and occur at the pointy end of the elbow. This type of fracture is often caused by a direct blow to the elbow or from landing on your elbow. Symptoms of an olecranon fracture may include pain, tenderness, swelling and the inability to straighten the elbow or pain while straightening the elbow.
How do you fracture your olecranon?
Olecranon fractures can occur by either falling directly on the back of the elbow or by the triceps muscle pulling off a fragment of bone from the elbow (a so-called avulsion fracture). Stress fractures are also a possible mechanism of injury to the olecranon, commonly seen in athletes such as baseball pitchers.
Which end of the ulna forms the tip of the elbow?
The proximal end of the ulna which forms the tip of the elbow is called the Olecranon process. This process is the site of attachment of the tricep muscle tendons. Its contraction is involved in elbow straightening.
Where is the olecranon process?
elbowthis notch is called the olecranon process; it articulates behind the humerus in the olecranon fossa and may be felt as the point of the elbow.
What bone does the olecranon fossa belong to?
The olecranon fossa is a deep triangular depression on the posterior side of the humerus, superior to the trochlea. It provides space for the olecranon of the ulna during extension of the forearm.
What is olecranon process?
Olecranon process consists of bone of proximal ulna from base of coronoid process (down arrow) proximally. Trochlear notch (up arrows; also called semilunar notch) is articular surface shown between two arrows. The ulnar nerve lies on the posterior aspect of the elbow, posterior to the medial collateral ligament.
What is the olecranon process of ulna?
The olecranon is the tip of the ulna and serves as the insertion point for the triceps muscle—which straightens the elbow. The triceps muscle inserts into the olecranon process of the elbow and straightens the elbow. The biceps inserts into the radius and bends the elbow.
Where is the olecranon process located quizlet?
The olecranon process is located on the medial aspect of the ulna. In the anatomical position, the tuberosity of the radius is in close proximity to the lateral side of the ulna.
What is the elbow bone called?
The elbow is where the two bones of the forearm – the radius on the thumb side of the arm and the ulna on the pinky finger side – meet the bone of the upper arm -- the humerus.
Is olecranon an ulna?
The olecranon is the proximal articular portion of the ulna. Along with the coronoid process, it forms the greater sigmoid (semilunar) notch which articulates with the humerus to provide flexion and extension of the elbow.
What is the common name of the olecranon process?
A firm nodule can form at the tip of the elbow; it is referred to as an olecranon nodule and is sometimes found in gout or rheumatoid arthritis. Also known as the olecranon process of the ulna.
What is the olecranon joint?
It is the point of articulation of three bones: the humerus of the arm and the radius and the ulna of the forearm. The elbow joint is classified structurally as a synovial joint.
What type of bone is the ulna?
long boneThe ulna forms the skeleton of the medial part of the forearm and is a long bone, consisting of an expanded proximal end, a shaft and a head at the distal end.
Which bone is the ulna?
The ulna is one of two bones that make up the forearm, the other being the radius. It forms the elbow joint with the humerus and also articulates with the radius both proximally and distally. It is located in the medial forearm when the arm is in the anatomical position. It is the larger of the two forearm bones.
Is the olecranon part of the ulna?
The olecranon (/oʊˈlɛkrənɒn/, from Greek olene 'elbow', and kranon 'head'), is a large, thick, curved bony eminence of the ulna, a long bone in the forearm that projects behind the elbow. It forms the most pointed portion of the elbow and is opposite to the cubital fossa or elbow pit.
What attaches to the olecranon fossa?
humerus. The two depressions—the olecranon fossa, behind and above the trochlea, and the coronoid fossa, in front and above—receive projections of the ulna as the elbow is alternately straightened and flexed. The epicondyles, one on either side of the bone, provide attachment for muscles concerned with movements of the ...
What is the olecranon fracture?
Treatment. Complications. An olecranon fracture is a break of the bone that forms the point in the back of your elbow. This olecranon bone is actually the end of the ulna, and it is the attachment of the powerful triceps muscle of the arm. The triceps muscle straightens your elbow, and an olecranon fracture can impair your ability ...
How to diagnose olecranon fracture?
Diagnosis. Your doctor might diagnose your olecranon fracture based on your physical examination findings. An X-ray of the elbow can usually visualize the fracture, helping your doctor determine the best course of treatment. In some more subtle injuries, such as stress fractures, an MRI can be helpful in making the diagnosis. 1 .
What causes a triceps fracture?
Common causes of olecranon fractures include: Avulsion fracture (the triceps muscle pulling off a fragment of bone from the elbow)
What causes a fractured olecranon?
Common causes of olecranon fractures include: 1 Falling directly on the back of the elbow 2 Avulsion fracture (the triceps muscle pulling off a fragment of bone from the elbow) 3 Stress fractures, most commonly seen in athletes, including baseball pitchers
How long does it take for an olecranon to heal?
The amount of motion that's recommended depends on the type of injury and fracture repair. The total healing time of an olecranon fracture is about 10 to 12 weeks.
How long does it take for a bone to move after elbow surgery?
Usually, gentle motion is started within the first weeks following surgery.
What causes stiffness in the elbow?
Nerve injury or irritation. Arthritis. Heterotopic ossification (extra bone formation that leads to stiffness) Physical therapy can help you regain full, or almost full, strength and mobility of your elbow joint. More severe injuries can take longer to heal and regain mobility and strength.
What is the process of the sphenoid bone extending downward from the junction of the body and great?
The process of the sphenoid bone extending downward from the junction of the body and great wing. It consists of the lateral and medial pterygoid plates, which are fused at the top. The top of the pterygoid process is pierced by the pterygoid canal.
Which bone articulates with the frontal bone?
The process of the cribriform plate of the ethmoid bone that articulates with the frontal bone.
What is the posterior process of the mandible?
A posterior process on the superior border of the ramus of the mandible consisting of a capitulum and neck. It articulates with the mandibular fossa of the temporal bone.
What is the term for a toothlike process extending upward from the axis and about which the atla?
A toothlike process extending upward from the axis and about which the atlas rotates. Synonym: densSee: illustration
What is the axial strand of cells in vertebrate embryos extending forward from the primitive knot?
An axial strand of cells in vertebrate embryos extending forward from the primitive knot. It forms a primitive axis about which the embryo differentiates.
What is the name of the bone in front of the foramen magnum?
The narrow part of the base of the occipital bone, in front of the foramen magnum, articulating with the sphenoid bone. Synonym: pars basilaris ossis occipitalis
Which portion of the first branchial arch forms the upper jaw?
1. The anterior portion of the first branchial arch, which, with medial nasal processes, forms the upper jaw.
What causes olecranon bursitis?
Trauma, such as hitting the elbow or falling on the back of the elbow, can lead to olecranon bursitis. People who lean their elbows against hard surfaces can develop this problem over time.
Does olecranon bursitis cause pain?
Most of the time with olecranon bursitis, the bursitis does not cause pain. The bursa can become infected, which will cause tenderness, redness, or warmth in the area; you may also have a fever. An infected bursa can break open and drain pus.
