| 摘要 |
A device is provided for tractioning a finger having a fractured bone and at the same time continuously flexing and extending the joint to which the fractured bone is proximally attached in order to prevent joint deterioration. A cast-like support structure is attachable to the forearm and hand for substantially immobilizing the wrist joint and joints of the hand proximal to the joint which is immediately proximally connected to the broken bone. Connected to the support structure is an actuator movable in a substantially arcuate path which is substantially in the plane of the natural movement of the finger, outward of the tips of the fingers and with the proximal connecting joint substantially at the radial center. The preferred actuator includes a motor driven carriage which is carried by the frame and is movable first in one direction and then in the other direction along the arcuate path. Elastomeric bands tension the broken finger to the carriage so that it follows the reciprocating carriage, first to extend the finger and then to flex the finger, bending occurring primarily at the proximally connected joint.
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