Causes of a Broken Thumb
Causes of a Broken Thumb typically involve trauma, twisting, or crushing forces applied directly to the thumb. The most frequent causes of a broken thumb include falls, contact sports, workplace injuries, and accidents where the thumb is caught, jammed, or bent backward. These injuries occur in both everyday life and high-risk environments.
Falling onto an outstretched hand is a leading cause. As people try to catch themselves during a fall, the thumb often takes the impact. This can result in hyperextension or direct pressure that fractures one or more thumb bones — often at the base near the wrist.
Contact sports such as rugby, hockey, and basketball are frequent culprits. A fast-moving ball striking the thumb or a collision during play can easily jam or bend the thumb, breaking the bone or even tearing surrounding ligaments. Goalkeepers in football are particularly prone to these injuries.
Workplace accidents — especially in construction, manufacturing, or agriculture — are another major contributor. The thumb may be caught in machinery, hit with tools, or crushed between heavy objects. These injuries are often more severe and may include open or multiple fractures.
Causes of a Broken Thumb
Vehicle accidents can also result in broken thumbs, particularly if the hand strikes a dashboard or steering wheel. Cyclists and motorcyclists may land on their hands during a fall, transferring force directly to the thumb.
In some cases, a broken thumb results from a direct blow, such as punching a hard object or being struck during an altercation. These injuries can lead to “Bennett’s fracture” — a break at the base of the first metacarpal that often requires surgery.
Understanding the causes of a broken thumb helps prevent injuries through proper technique, protective gear, and awareness of hand positioning in high-risk activities. Whether at work, sport, or during daily tasks, using the hands mindfully can significantly reduce the risk of trauma.
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