2006
DOI: 10.1111/j.1532-950x.2006.00173.x
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Induction of a Barrier Membrane to Facilitate Reconstruction of Massive Segmental Diaphyseal Bone Defects: An Ovine Model

Abstract: This model may be useful to evaluate new strategies in bone tissue engineering because the PMMA-induced membrane may help confine bone morphogenetic proteins, skeletal stem cells, or other agents to the defect cavity where they could be useful to enhance bone formation.

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Cited by 124 publications
(112 citation statements)
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References 18 publications
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“…16 The lower limb was fitted with a short cylindrical cast (X-ray-penetrable polyethylene treated with polyurethane resin tape, Dynacast Optima; Smith þ Nephew, Covely, France) with an 8-mm-diameter steel walking bar. Casts were left in place for 6 weeks and 6 months after the first and second surgical procedures, respectively.…”
Section: Postoperative Managementmentioning
confidence: 99%
See 1 more Smart Citation
“…16 The lower limb was fitted with a short cylindrical cast (X-ray-penetrable polyethylene treated with polyurethane resin tape, Dynacast Optima; Smith þ Nephew, Covely, France) with an 8-mm-diameter steel walking bar. Casts were left in place for 6 weeks and 6 months after the first and second surgical procedures, respectively.…”
Section: Postoperative Managementmentioning
confidence: 99%
“…[8][9][10]12 In the first step, a PMMA spacer molded to match the size and shape of the defect is inserted into the defect, inducing formation of an encapsulating membrane that is well vascularized and contains Core binding factor alpha 1 (Cbfa1, an osteoblast-specific transcription factor essential to differentiation) positive cells. 16 Six weeks postsurgery, the spacer is removed, leaving a chamber that can be filled with granules of engineered bone and provide an appropriate environment favoring bone repair mechanisms.…”
Section: Introductionmentioning
confidence: 99%
“…Animal studies show the membrane is richly vascularized by numerous small capillaries and with high concentrations of growth factors (vascular endothelial growth factor, transforming growth factor-b1), osteoblast precursors (CBFA1+), and osteoinductive (bone morphogenetic protein-2) factors when compared with control subjects [17,18]. Moreover, the membrane induced by cement shows an absence of inflammatory cells [18], as opposed to membrane induced by silicone interposition [10] which may prevent deleterious graft resorption.…”
Section: Discussionmentioning
confidence: 99%
“…Moreover, the membrane induced by cement shows an absence of inflammatory cells [18], as opposed to membrane induced by silicone interposition [10] which may prevent deleterious graft resorption. Although bone resorption along with new bone formation are prerequisites to bone incorporation and remodeling, animal studies suggest the absence of inflammatory cells in this membrane [18] and that may minimize the amount of resorption. In our patient we could detect no resorption radiographically.…”
Section: Discussionmentioning
confidence: 99%
“…Bone defects are of particular relevance to the recovery and function of injured warriors [1]. This research addresses the treatment of segmental bone defects and methods that can be used to optimize the Masquelet induced membrane [2][3][4][5][6] technique to create a superior graft bed for bone regeneration. Using the Chronic Caprine Tibial Defect (CCTD) model, this study specifically aims to assess the effects of surgical technique and spacer design in optimizing the biology of the "Induced Membrane" (IM), and to define the characteristics of an optimal membrane with respect to the parameters of cell composition, histology, and gene expression.…”
Section: Introductionmentioning
confidence: 99%