It is called dislocation
The joint has been dislocated.
LigamentElastic tissue joining bones to bones.
A bone out of joint, which is also known as a dislocation can be caused from trauma. When a bone is out of joint, it is not advisable to hand the dislocation yourself. Trying to realign the bone could cause further damage and possible a fracture. It would be best to seek medical attention as soon as possible to minimize damage.
The tibia, or shin bone, is not a joint.
The joint where the end of the bone moves in a circular motion is called a ball-and-socket joint. This type of joint allows for a wide range of movement, including rotation, and is exemplified by the shoulder and hip joints. In a ball-and-socket joint, the spherical head of one bone fits into a cup-like socket of another, enabling multi-directional movement.
The hip bone and the shoulder bone its the knee bone joint
synovial joint
Partial displacement of a bone from its joint is a medical subluxation. Complete displacement of a bone from its joint is a dislocation.
The knee itself is made of ligaments cartilage and bone, and the kneecap is made of bone.
The smooth layer of connective tissue protecting the bone surfaces in a synovial joint is called articular cartilage. It helps reduce friction and absorb shock during joint movement.
The major joints of the lower limb include the hip joint (ball and socket joint connecting the thigh bone to the pelvis), the knee joint (hinge joint connecting the thigh bone to the shin bone), and the ankle joint (hinge joint connecting the shin bone to the foot).
a bone moves when a joint doesn't.Bones are stiff, joints are bendy.