The ulna is a bone found in the forearm.
The ulna is a bone found in the forearm . It has an extensive body and two extremities, articulating with the radius and 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 found in the inner region of the forearm, while the radius is located in the outer region.
This bone, together with the radius and the humerus, develops the elbow joint . On the other hand, with the radius and the carpal bones it gives rise to the wrist joint.
Injuries to the ulna
The most common injuries to the ulna occur in the area near the wrist. If a person falls and puts his hands 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, dislocation or distortion of the elbow and the so-called Colles fracture , among others that affect the bones of the forearm, wrist or hand.
Although it is very common for fractures of the ulna 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 an ulna fracture, since two apparently identical 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 coronoid process, stress, avlusion, displaced, comminuted, incomplete and olecranon.
Classification of fractures according to type
Broadly speaking, we can talk about two types of ulna fractures :
* stable : when the displacement of the bone fragments does not reach 30%. Also falling into 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 forms an angle greater than 10 degrees. Another possibility is a fracture that affects the cortex between the bones. In this case, other injuries may accompany the condition, such as elbow dislocation and radius fracture.
A small cube can be referred to as a cube.
Other problems linked to the ulna
Tendinitis is an injury that occurs when the tendons suffer overuse. If we focus on the wrist joint, we can differentiate two types: posterior ulnar tendonitis and anterior ulnar tendonitis.
The anterior ulnaris is a muscle found in the forearm, and its tendons of origin are in the humerus and ulna; The posterior one, on the other hand, has its insertion tendon on the posterior surface of the fifth metacarpal and its origin, on the lateral side of the ulna. While the location of each injury is different, they are both treated in similar ways.
a small cube
The concept of cube (with an accent on the I and not the U ), for its part, is used as a diminutive of cube . The piece of ice used to cool a drink is generally called an 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's probably melting on the floor” .
The dehydrated and concentrated broth that is stored in cubes is also called cube. There are vegetable broth cubes, chicken broth cubes, meat broth cubes and others.