What are the main joints of the human body

What are the main joints of the human body

It may seem easy from the outside to grasp an object or walk around. However, this is possible because our body is made up of hundreds of components that make all this achievement of nature possible. Although bones and muscles are essential, there is one component without which we could not move a single millimeter: the joints.

It’s not just about the elbow, hands, or knees. In our body there are hundreds of joints that allow even the smallest movement to be carried out without complication. In this new oneHOWTO article we tell you what are the main joints of the human body, with the name and function of the different types of joints.

Types of joints of the human body

Joints are pieces of soft tissue that are found between bones, joining them together and giving them movement and flexibility. They are in charge of making it possible for us to move and to keep all our bones together, despite the efforts of the day to day. Also, as if it were a glue, they manage to hold the whole of our body together.

However, not all joints are the same. Each one has a different mechanism and functionality. What are the main joints of the human body? These are the names of the joints of the human body:

  • Immobile or stringy: its function is to hold two bones together without allowing any type of mobility. They work like glue on certain parts of our body, such as the cranial vault, where all the bones of the skull are joined to protect the brain.
  • Semi-mobile or cartilaginous: semi-mobile joints are halfway between those that move and the immobile ones, since their degree of movement is reduced. Within their union radius, they are composed of cartilage, which limits movement but has a certain flexibility. This is the case of the union between the vertebrae of the spine.
  • Mobile or synovial: are those joints that have the ability to move in many directions. Within this category, we can find different types according to their range of motion. A very clear example of them can be the extremities, such as arms and legs.

It is precisely in this last type where we are going to stop to know a little more in depth what the different types of mobile joints are like.

Hinge joints

Hinge joints are a type of mobile joint whose movement is very characteristic of our extremities, that is, of the arms and legs. The movement that gives the bones that it joins is, as its name indicates, like a hinge, getting to have an aspect really similar to this mechanism. This means that the movement only goes in one direction, to forward and to backward.

The classic example of hinge joints is the knees and elbows, the union of which allows the bones to come together and then return to their linear position.

Pivot joints

Pivot joints go one step further than hinge joints, as they allow some extension of mobility in the areas where they are located. Its function and physiognomy make it possible for the different parts of the body to have a more rotating movement. Specifically, allow lateral rotation and medial rotation movement.

A good example of this type of joint could be the neck or the wrists, whose movement can make us turn and rotate one of the parts that holds the joint, in this case, the head on the trunk or the hand on the arm.

Ball joints

Ball joints go a step further than the previous two in terms of their degree of mobility. They allow a certain part of the body greater freedom of movement, being able to go both from front to back and turn and rotate, in such a way that we can make circular movements.

Examples of this type of joint are the hips and shoulders, joints that we can rotate completely. It is because they are formed by a circular bone which is covered by the tissue of the joint, fitting easily into the other bone to which it is attached. One of the most graphic examples is the cavity of the hip, to which the femur bone is attached, allowing us, for example, to spread our legs.

Now that you know what the main joints of the human body are, keep learning about anatomy with these articles:

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