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Abstract
The new distractor was conceived as part of the PC-Fix instrumentation with the function
of reducing and compressing the fracture before plating. Other distraction devices
already exist, but the smaller devices (relative to the large and expensive traction
table) tend to cause the bone segments to be rotated off the long axis due to moments
created by soft tissue forces. It is thus necessary to hold the position of such devices
manually against, what can be, very large forces. The new device eliminates such moments
by centring the rotation axes on the long axis of the bone. The bone segments are
thereby retained in longitudinal orientation without manual input. Once the bone has
been distracted and reduced the device is locked so that the position of the bone
is maintained during fixation. The current distractor has been designed for the forearm
but it is anticipated that larger models will be constructed for the other long bones.
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References
- Spine instrumentation.Amer. J. Orthop. 1964; 8: 228-231
- Planning and reduction techniques in fracture surgery.Springer Verlag, Berlin, Heidelberg, New York, Tokyo, Paris1988
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© 1995 Published by Elsevier Inc.
