How do DataHand ergonomic keyboards reduce carpal tunnel involvement?
Since keystrokes on the DataHand system are distributed among five different motions, some of the motions do not involve tendons passing through the carpal tunnel. The Down, North, and South keys require flexor and extensor muscles of the fingers and hands for their activation. These muscles utilize tendons that travel through the carpal tunnel. On other keyboards, all keystrokes rely on carpal tunnel involvement. On the DataHand keyboard, the East and West keystrokes use intrinsic muscles of the fingers and hands which do not require carpal tunnel involvement. Even the keys requiring carpal tunnel involvement on the DataHand keyboard offer low forces and short finger travel distances. These two factors greatly reduce stresses through the carpal tunnel. Because the wrist is supported in a straight position on the DataHand palm pad, the tendons moving through the carpal tunnel do not become crimped and irritated. The reduced chronic workload associated with DataHand use is likely to all
