What is the joint between the humerus and ulna?
elbow-joint
The humeroulnar joint (ulnohumeral or trochlear joint), is part of the elbow-joint. It is composed of two bones, the humerus and ulna, and is the junction between the trochlear notch of ulna and the trochlea of humerus.
What is the name of the elbow joint?
The three joints of the elbow include: Ulnohumeral joint is where movement between the ulna and humerus occurs. Radio humeral joint is where movement between the radius and humerus occurs. Proximal radioulnar joint is where movement between the radius and ulna occurs.
What are the specific parts of the humerus and ulna in the elbow?
The Humerus (upper arm bone) forms the upper portion of the joint. The lower end of the humerus divides in to two bony protrusions known as the medial and lateral epicondyles which can be felt on either side of the elbow joint. The Ulna is the larger bone of the forearm located on the inner surface of the joint.
What are the 2 joints of the elbow?
However, there are two lesser-known, but equally important joints that make up the elbow:
- humeroradial joint – the joint formed where the radius and humerus meet.
- proximal radioulnar joint – the joint where the radius and ulna meet.
What is above the elbow called?
The outside, or lateral, bump just above the elbow is called the lateral epicondyle. Most of the muscles that straighten the fingers and wrist all come together in one tendon to attach in this area. The inside, or medial, bump just above the elbow is called the medial epicondyle.
Why is it called humerus?
Etymology. The word “humerus” is derived from Latin: humerus, umerus meaning upper arm, shoulder, and is linguistically related to Gothic ams shoulder and Greek ōmos.
How many ligaments are in the elbow joint?
Three ligaments are present in the elbow joint: the ulnar collateral ligament, the radial collateral ligament, and the annular ligament. These ligaments provide strength and support to the elbow joint along with the surrounding muscles or your arm and forearm.
What type of synovial joint is the humerus ulna of the elbow joint?
Hinge 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….Elbow joint.
| Type | Hinge joint |
|---|---|
| Bones | Humerus, radius, ulna |
| Mnemonics | CRAzy TULips (Capitulum = RAdius, Trochlea = ULna) |
What are the 4 joints of the elbow?
The elbow joint is classified structurally as a synovial joint. It is also classified structurally as a compound joint, as there are two articulations in the joint. Synovial joints, also called diarthroses, are free movable joints….Elbow joint.
| Type | Hinge joint |
|---|---|
| Mnemonics | CRAzy TULips (Capitulum = RAdius, Trochlea = ULna) |
Where is the crook of your elbow?
The crook of your arm or leg is the soft inside part where you bend your elbow or knee.