The clavicle is an integral part of the upper limb belt. It is an S-shaped slender bone connecting the scapula and the sternum. It is placed across the upper front of the chest and under the skin, and it can be touched all the way. The clavicle has no medullary cavity, and it is the first bone to ossify in the fetus, and it is the bone that ossifies within the membrane.

The clavicle is the bone connected with the axial skeleton in the upper limb, which acts as a strut, supporting the upper limb away from the trunk, expanding people's vision, increasing the range of motion of the upper limb and improving the labor efficiency of the upper limb.

Extended information:

The movement type of scapula belt:

The scapula belt is used to describe the movement of scapula and clavicle. The sternoclavicular joint and acromioclavicular joint make the scapular belt move. There are six types of movements of the scapula belt: upward lift, downward lift, forward extension, backward retraction, upward rotation and downward rotation. There are five muscles attached to the scapula and clavicle, and provide the movement of the scapula belt.

Up/down and forward/backward are linear motions.

topspin and backspin are angular motions.

in addition to the above, there is another movement of the scapula, which is the inclination of the scapula. This kind of exercise usually occurs on the shoulder joint hyperextension.

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