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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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© 1995 Published by Elsevier Inc.