| 摘要 |
The external fixation device for osteosynthesis comprises first and second longitudinal bars (3,4) as carriers for fixation means (5;10) to the bone (7), a three-dimensional shell (1) attached to the extremity of said first bar (4) and a gliding element (2) attached to the extremity of said second bar (3) having at least three gliding points on each side of said shell (1). In the preferred embodiment the gliding element (2) consists of a first disk (2A) gliding on one side of the shell (1) and a second disk (2B) gliding on the opposite side of the shell (1), both disks (2A,2B) being connected through a central hole (12) in the eenter of the shell (1) by means of a threaded extension (2C). The shell (1) and the gliding element (2) are movably arranged to each other in such a way that the frae ends of said bars (3,4) are extending in opposite directions. It enables e.g. motion of the wrist joint about all three axes, while keeping the center of rotation at one point during treatment of the fracture and thus preventing complications.
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