Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Apr 2009
The use of structural periacetabular allografts in acetabular revision surgery: 2.5-5 years follow-up.
"Acetabular bone loss" presents a major reconstructive challenge in total hip arthroplasty. Loss of acetabular bone stock is a consequence of removal of bone during the original procedure, subsequent prosthetic failure and osteolysis resulting from wear particles of cement and polyethylene. In case of severe bone loss treatment options are rather limited, as fixation requires either biological (cancellous allograft with cage or structural allograft) or non-biological (trabecular metal, triflange implant, etc.) scaffolds. ⋯ The bicortical allograft without protective device seems to function as a passive biocompatible dead scaffold, which has a less intrinsic strength at intermediate term follow-up, compared to the by ring or cage protected structural allografts.
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Bone transport is based on the principle of distraction osteogenesis described by Ilizarov and is a consecrated method for the treatment of segmental bone defects. One of its most problematic and, paradoxically, least studied aspects is the consolidation of the docking site. We studied histologically the ossification of the docking site and regenerate to determine any difference between them. ⋯ The experimental bone transport model proposed in the present study permits us to conclude that there is a clear difference between the ossification of the docking site and of the regenerate.
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Arch Orthop Trauma Surg · Apr 2009
Single stage arteriovenous short saphenous loops in microsurgical reconstruction of the lower extremity.
The short saphenous vein can be used "in situ" to create a temporary arteriovenous shunt for lengthening the recipient vessels of the injured limb in microsurgical reconstructions of the lower extremity. We report our results using this single-anastomosis turnover technique in three high-energy trauma patients who presented open tibial fractures associated with vascular injuries. ⋯ The use of the ipsilateral small saphenous vein "in situ" for immediate arteriovenous loop formation may be of great value in complex lower leg reconstructions. It is a reliable adjunctive technique that provides healthy vessels to supply the free flap, permitting stable wound coverage and high rate of limb salvage.