List theTypes of movements in biomechanics …

There are various types of movement in body parts which can be divided in four types i.e. gliding & angular movements, circumduction & rotation and few other movements.

Gliding movements: Gliding movements is the simplest kind of movement that can take place in a joint, one surface gliding or moving over another without any angular or rotator movement.

Angular movement: Angular movement occurs between long bones. By angular movement the angle between the two bones increased or decreased. The various movements which fall under angular movements are described below:

a) Flexion: Bending parts at a joint so that the angle between them decreases and parts come closer together (bending the lower limb at the knee).
b) Extensions: Straightening parts so that the angle between them increases and parts moves farther apart (straightening the lower limb at the knee).
c) Abduction means moving a part away from the midline (lifting the upper limb horizontally to form a right angle with the side of the body))
d) Adduction means moving a part towards the midline ( returning the upper limb from the horizontal position to the side of the body).

Circumduction: Circumduction is that movement which takes place between the head of a bone and its articular cavity. This kind of motion is best seen in the shoulder and hip joints.

Rotation: Rotation is a form of movement in which a bone moves around a central axis without undergoing any displacement from the axis. Moving a part around an axis is called rotation.eg. Twisting the head from side to side.