The joint - this is one of the most advanced types of bone joints.Joints of bones linked into one, keep them next to each other, providing a degree of mobility of the bones.Joints may be different in shape and have the following physical properties: flexibility, mobility, strength.The properties of bone joints is determined by their function.
To date, there are three types of bone joints, namely continuous connection, discontinuous joints and symphysis or polusustavy.In continuous joints between the bone structure has a layer of cartilage.In such compounds the gap between bones missing.
Discontinuous connections or joints characterized by the presence of the gap between the bones and the special membrane that carpets the inside of the joint capsule.Transitional forms from contin
uous to discontinuous connections are symphysis or polusustavy.This type of bone joints is characterized by small cracks in the cartilage between the bones.
in the joints can be considerable mobility that allows you to perform a variety of movements.Each joint has a surface, which are covered with cartilage and joint space capsule.Sometimes there is an additional education in the form of joint discs.
joints can vary the number of joint surfaces, the amount of the bones.Depending on how many joint surfaces distinguish simple joints, which are formed only by two joint surfaces, and complex joints that can be formed by three or more surfaces of the joint.
also highlights the complex and combined types of joints.In the complex joint between the bonding surfaces have articular disk which separates the lumen of the joint on two floors.Combined joint usually consists of two anatomically isolated joints that work together, for example, left and right temporomandibular joint.
There are also joints depending on the shape of the articular surfaces: ellipsoidal, spherical and cylindrical.The above form of joints have various embodiments.For example, a kind of spherical joint are flat and the cup-shaped joints and cylindrical - ginglymoid joint.
Depending on the shape of the articular surfaces of each joint can have a certain number of axes around which the movement can take place in a particular joint.Therefore, the joints can be classified according to the anatomical and physiological classification of uniaxial (with one axis of movement), biaxial, triaxial and multiaxial.