ball and socket joints
The ball and socket joint can move in a complete circle.
Ball and socket joint
The knee joint is a hinge joint that allows for flexion and extension of the leg. It is formed by the articulation between the femur (thigh bone) and tibia (shin bone), as well as the patella (kneecap).
Articular cartilage
The shoulder joint is a ball-and-socket joint, where the rounded head of the humerus bone articulates with the shallow socket of the scapula. This joint allows for a wide range of motion in the shoulder.
The four kinds of movable joints are hinge joint, ball-and-socket, pivot joint, and gliding joint.Movable joint: allows forward or backward.Ball-and-socket joint: allows the greatest range of motion.Pivot joint: allows one bone to rotate around another.Gliding joint: allows one bone to slide over another.~ A. K. =)
Ball-and-socket joint: Consists of a bone with a globular or slightly egg-shaped head that articulates with the cup-shaped cavity of another bone. Such a joint allows a wider range of motion than does any other kind, permitting movements in all planes, as well as rotational movement around a central axis. The hip and shoulder contain joints of this type.Condyloid joint: The ovoid condyle of one bone fits into the elliptical cavity of another bone, as in the joints between the metacarpals (bones of the palm) and phalanges (bones of the fingers and toes). This type of joint permits a variety of movements in different planes; rotational movement, however, is not possible.Gliding joints: The articulating surfaces are nearly flat or slightly curved. These joints allow sliding or back-and-forth motion and twisting movements. Most of the joints within the wrist and ankle, as well as those between the articular processes of adjacent vertebrae, belong to this group. The sacroiliac joints and the joints formed by ribs 2 though 7 connecting with the sternum are also gliding joints.Hinge joint: The convex surface of one bone fits into the concave surface of another, as in the elbow and the joints of the phalanges. Such a joint resembles the hinge of a door in that it permits movement in one plane only.Pivot Joint: The cylindrical surface of one bone rotates within a ring formed of bone and fibrous tissue of a ligament. Movement at such a joint is limited to rotation around a central axis. The joint between the proximal ends of the radius and the ulna, where the head of the radius rotates in a ring formed by the radial notch of the ulna and a ligament (annular ligament), is of this type. Similarly, a pivot joint functions in the neck as the heard turns from side to side. In this case, the ring formed by a ligament (transverse ligament) and the anterior arch of the atlas rotates around the dens of the axis.Saddle joint: Forms between bones whose articulating surfaces have both concave and convex regions. The surface of one bone fits the complementary surface of the other. This physical relationship permits a variety of movements, mainly in two planes, as in the case of the joint between the carpal (trapezium) and the metacarpal of the thumb.
A pivot joint is found at the elbow. The forearm is between the elbow and the wrist and so has two main joints. One at the elbow and one at the wrist. The other at the wrist is a gliding joint.
an immoable is a fixed joint such as in the skull like a sutches. some kind of joint that doesnt move.
The ulna is one of the two bones in the forearm and its primary function is to provide stability and support to the arm. It also plays a crucial role in forearm rotation and helps in transmitting forces between the hand and the elbow joint.
hinge joint
synovial