Causes And Risk Factors Of De Quervain's Tenosynovitis

Repetitive Tasks

De Quervain's tenosynovitis can be caused, in part, by repetitive tasks. Tasks like this may include typing at a keyboard for most of the day, using the thumb to grasp objects repeatedly, or other tasks that require repeated thumb motions. These tasks work sort of like a strain injury. The repetition pulls the muscles too much, taking away some of the time they need to regain their energy. Not enough oxygen will reach the muscles before they run out of energy molecules, so they will be strained. When this happens, pain will begin to radiate from the extensor pollicis brevis and adductor pollicis longus. If a person does not give the thumb time to rest, then the condition will worsen. This is usually what happens with tasks like the ones described above. Without having enough time to recover, the damage will eventually cause the individual to develop de Quervain's tenosynovitis.

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