A clavicle fracture is a common injury seen after a fall on an outstretched arm or direct impact. A large majority of all clavicle fractures will occur in the middle third of the shaft. Traditionally, treatment was based on the premise that malunion (or even non-union) of clavicle fractures was well tolerated and imposed little morbidity. Accordingly, these fractures were usually treated with only a course of immobilization. Recently, that assumption has been questioned, and a greater number of clavicular fractures are currently treated operatively. Clavicular fractures that occur far laterally (known as distal clavicle fractures) must be considered distinctly, as they may involve the ligaments that suspend the glenohumeral joint. Also, because the clavicular physis is among the last to close (around age 21 or later), an apparent separation of the acromioclavicular joint in a young adult may actually represent a physeal fracture of the clavicle.
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