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Abstract
For several years our attention has been directed towards the damage to the blood
supply brought about by implant contact. The disturbance of the blood supply results
in necrosis and consequent remodelling which then results in early temporary porosis
and potentially in bone sequestration. Reduced resistance to local infection may follow.
Locally delayed remodelling may give rise to stress concentrations and thus increase
the danger of refracture. With this in mind a new approach to periosteal splinting
has been developed which realizes minimal implant contact to preserve the blood supply
to the bone. In order to elucidate the sequence of events in healing, time-lapse cinematography
has been used to facilitate the comparison of conventional and new plates and internal
splints. Fractures of the sheep tibia were recorded radiologically at short intervals
Samples of these radiographs are displayed for comparison. The healing process after
application of an internal fixator (PC-Fix) results in earlier solid union and a more
homogeneous bone structure.
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References
- Zeitrafferradiologische Darstellung einer Frakturheilung unter stabilen Verhaltnissen. Inaug..in: 4th Ed. Dissertation University of Basle. 1988
- Internal fixation using the point contact plate — an in vivo study in sheep.Orthop. Trans. 1994; 18 ([Abstract]): 13-14
- The concept of biological plating using the limited contact — dynamic compression plate (LC-DCP).Injury. 1991; 22
- A dynamic compression plate.Acta Orthop. Scand. Suppl. 1969; 125: 31-41
Tepic S, Remiger AR, Morikawa K, Predieri M, Perren SM. Strength recovery in fractured sheep tibia treated with a plate or an internal fixator: An experimental study with a two year follow-up. J. Orthop. Trauma (in press).
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Copyright
© 1995 Published by Elsevier Inc.
