[Reconstruction of the long bones by the induced membrane and spongy autograft].

Service de chirurgie orthopédique, traumatologique et réparatrice, hôpital Avicenne, université Paris XIII, Bobigny, France.
Annales de Chirurgie Plastique Esthétique (Impact Factor: 0.59). 07/2000; 45(3):346-53.
Source: PubMed

ABSTRACT In the reported series of 35 cases bone reconstruction of large diaphyseal defects was performed in two stages. The first stage was the insertion into the defect of a cement spacer which was responsible for the formation of a pseudosynovial membrane. The second stage was the reconstruction of the defect by a huge fresh autologous cancellous bone graft. The membrane induced by the spacer prevents the resorption of the graft and favors its vascularity and its corticalisation. In weight bearing diaphyseal segments the normal walking was possible at 8.5 months on average. The length of the reconstructed defects was 4 to 25 cm.

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    ABSTRACT: The healing of critical sized segmental defects is an ongoing clinical problem. No method has achieved pre-eminence. The Masquelet technique is a relatively new innovation involving the induction of a fibrous tissue membrane around the bone defect site taking advantage of the body's foreign body reaction to the presence of a polymethylmethacrylate (PMMA) spacer. The aim of this study was to investigate the properties and characteristics of this induced membrane and its effectiveness when used in conjunction with allograft or an allograft/autograft mix as filler materials in an ovine critical sized defect model. The resultant induced membrane was found to be effective in containing the graft materials in situ. It was demonstrated to be an organised pseudosynovial membrane which expressed bone morphogenic protein 2 (BMP2), transforming growth factor- beta (TGFβ), vascular endothelial growth factor (VEGF), von Willerbrand factor (vWF), interleukin 6 (IL-6) and interleukin 8 (IL-8). While more new bone growth was evident in the test groups compared to the controls animals at 12 weeks, the volumes were not statistically different and no defects were fully bridged. Of the two graft material groups, the allograft/autograft mix was shown to have a more rapid graft resorption rate than the allograft only group. While the Masquelet technique proved effective in producing a membrane to enclose graft materials, its ability to assist in the healing of critical sized segmental defects when compared to empty controls remained inconclusive.
    PLoS ONE 12/2014; 9(12):e114122. · 3.53 Impact Factor
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