Anatomy by richard snell pdf

Symptoms typically include pain at the site of the break and a decreased ability to move the affected arm. It is often caused by a fall onto a shoulder, outstretched arm, or anatomy by richard snell pdf trauma. It can take up to five months for the strength of the bone to return to normal. 5 cm in a young person.

Clavicle fractures most commonly occur in people under the age of 25 and those over the age of 70. Among the younger group males are more often affected than females. Clavicle fractures are commonly known as a breaking of the collarbone, and they are usually a result of injury or trauma. The most common type of fracture occurs when a person falls horizontally on the shoulder or with an outstretched hand. A direct hit to the collarbone can also cause a break. In most cases, the direct hit occurs from the lateral side towards the medial side of the bone.

It is most often fractured in the middle third of its length which is its weakest point. Children and infants are particularly prone to it. Newborns often present clavicle fractures following a difficult delivery. After fracture of the clavicle, the sternocleidomastoid muscle elevates the medial fragment of the bone.