骨科英语： Humerus fracture
Humerus fracture
A humerus fracture is an injury to the bone of the upper arm. The upper arm bone,the humerus, connects the shoulder to the elbow. Humerus fractures are generally divided into three types of injuries:
ProximalHumerus Fractures
Proximal humerus fractures occur near the shoulder joint. The shoulder joint is aball-and-socket joint, with the ball being the top of the humerus bone.
Fracturesof this ball are considered proximal humerus fractures. These fractures may involve the insertion of the important rotator cuff tendons. Because these tendons are important to shoulder motion, treatment may depend on the position of these tendon insertions.
Mid-Shaft Humerus Fractures
Mid-shaft humerus fractures occur away from the shoulder and elbow joints.
Most humeral shaft fractures will heal without surgery, but there are some situations that require surgical intervention. These injuries are commonly associated with injury to one of the large nerves in the arm, called the radial nerve. Injuryto this nerve may cause symptoms in the wrist and hand.
Distal Humerus Fractures
Distal humerus fractures are uncommon injuries in adults. These fractures occur near the elbow joint. These fractures most often require surgical treatment unlessthe bones are held in proper position. This type of fracture is much more common in children, but the treatment is very different in this age group.
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