DEFINITION OF ULNA

ULNA

The ulna is a bone found in the forearm. It has an extensive body and two extremities, articulating with the radius and the humerus in its upper part and with the carpus and radius in its lower part.

Slightly curved and with greater volume in its upper sector, the ulna – also known as the ulna – has three faces. This bone is located in the internal region of the forearm, while the radius is located in the external region.

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This bone, along with the radius and humerus, develops the elbow joint. On the other hand, with the radius and carpal bones it gives rise to the wrist joint.

The most common ulna injuries occur in the area near the wrist. If a person falls and puts his hands up to avoid hitting his head, the ulna will receive the stress of the impact and may fracture if the force exceeds its elastic resistance. This injury can occur in conjunction with others, such as radius fracture, wrist dislocation, elbow dislocation or distortion and the so-called Colles fracture, among others that affect the bones of the forearm, wrist or hand.

Although it is very common for ulna fractures to occur in older people, age is not an exclusive condition for this type of injury. There are several factors that can affect the characteristics of a fracture of the ulna, since two apparently equal accidents differ in the force of the impact, the angle of the blow, the age of the subjects, etc. Regarding the type of fracture, it is possible to differentiate between the coronoid process, stress, avlusion, displaced, comminuted, incomplete and olecranon.

Broadly speaking, we can speak of two types of ulna fractures :

* stable : when the displacement of the bone fragments does not reach 30%. Also in this category is the so-called greenstick fracture, in which the cortex and periosteum between the bones are not damaged (these are necessary to block rotation);

* unstable : when the displacement of the bone fragments does exceed 30% or they form an angle greater than 10 degrees. Another possibility is a fracture involving the cortex between the bones. In this case there may be other injuries that accompany the picture, such as dislocation of the elbow and fracture of the radius.

Tendinitis is an injury that occurs when the tendons are overused. If we focus on the wrist joint, we can differentiate two classes: posterior ulnar tendinitis and anterior ulnar tendinitis.

The ulnaris anterior is a muscle found in the forearm, and its tendons of origin are in the humerus and ulna; the posterior, on the other hand, has its insertion tendon on the posterior face of the fifth metacarpal and the origin tendon on the lateral side of the ulna. Although the location of each injury is different, both are treated in similar ways.

The concept of cube (with an accent on the I and not on the U ), for its part, is used as a diminutive of cube. In general, the piece of ice that is used to cool a drink is called a cube. For example: “Do you want a cube? I think the wine is not very cold”, “I don’t like to drink beer with ice cubes”, “I dropped an ice cube under the table and I couldn’t find it, it must be melting on the floor”.

The dehydrated and concentrated broth that is stored in cubes is also called a cube. There are vegetable bouillon cubes, chicken bouillon cubes, beef bouillon cubes and others.

ULNA