When the forearm is flexed, the radial fossa accommodates the anterior aspect of the radial head, facilitating movement. Likewise, the coronoid fossae accommodates the coronoid process of the ulna during flexion of the forearm.
What fits into the radial fossa?
A small depression in the distal humerus on its anterior surface proximal to the capitulum. When the elbow is in complete flexion, the proximal end (the head) of the radius slides up along the capitulum and one edge of the head of the radius fits into the radial fossa.
What does the coronoid fossa do?
Superior to the anterior portion of the trochlea is a small depression, the coronoid fossa, which receives the coronoid process of the ulna during flexion of the forearm.
Where is Olecranal?
The olecranon is the tip of the elbow and is part of the ulna.
What is cubital fossa?
The cubital fossa is a small triangular area located on the anterior surface of the elbow, with the apex of the triangle pointing distally. It contains some important structures, on their passage from the arm to forearm. [[1] It is homologous to the popliteal fossa of the lower limb.
Where is the greater tubercle?
The greater tuberosity is the prominent area of bone at the top of the humerus and is the attachment for the two large, powerful rotator cuff muscles – supraspinatus and infraspinatus. It is injured/fractured in a fall by either landing directly onto the side of your shoulder or landing with your arm outstretched.
What is the epicondyle area?
The elbow joint is made up of the bone in the upper arm (the humerus) and one of the bones in the lower arm (ulna). The bony prominences, or bumps, at the bottom of the humerus are called the epicondyles. The bump on the outer side of the elbow is called the lateral epicondyle.
What is olecranon fossa of humerus?
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 attaches to coronoid fossa?
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 forearm and fingers.
What is the olecranon fossa?
Fossa (pl. fossae): a depressed area; usually broad and shallow. The olecranon fossa is located on the posterior surface of the distal humerus, where it receives the proximal ulna during full extension of the arm.
What fits into the fossa when the elbow is flexed?
The projection that forms the lower border of the trochlear notch, the coronoid process, enters the coronoid fossa of the humerus when the elbow is flexed.
Why surgical neck of humerus is called so?
The anatomical neck is the portion that lies just below the head. As the neck continues along the humerus body, it is called the surgical neck (so named because this is the location of many fractures that require surgery).
What is musculocutaneous nerve?
The Musculocutaneous nerve is a large branch of the Brachial Plexus.It is called musculocutaneous nerve as it supplies the muscles of the front of the arm and skin of lateral side of forearm. The Musculocutaneous nerve is a terminal branch of the lateral cord of the Brachial Plexus.
What is the top of the humerus called?
A ‘ball’ at the top of the upper arm bone, humerus, fits neatly into a ‘socket’, called the glenoid, which is part of the shoulder blade, scapula. The shoulder joint is made up several bones and soft tissues.
What is the funny bone called?
Funny you should ask. It turns out that your funny bone isn’t a bone. It’s actually a nerve — one that starts in your spine and travels from your neck, through your elbow and to your fingers (your pinky and ring fingers, to be exact). It’s called the ulnar nerve.
Is olecranon an ulna?
The olecranon /oʊˈlɛkrənɒn/, from the Greek olene meaning elbow and kranon meaning 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.
