The goal of this study is to evaluate the bone regeneration capacity of BM-MSC (Bone marrow mesenchymal stromal cells), in patients with nonunion. BM-MSC cultured are seeded on a collagen scaffold, included into autologous platelet-rich plasma (PRP) clot, and implanted in the nonunion bone defect.
Nonunion (pseudoarthrosis) is one of the most serious complications of bone fracture. Even though different treatments have been used to repair nonunion bone defects, most of them have limitations, like morbidities, limited supply, frequent treatment failure, and high cost. Based on the knowledge that MSC have multipotential capacity of differentiation into bone, cartilage, fat, and endothelial cells, and also, play a key role in the process of bone formation and fracture repair. In this study, we evaluated the use the bone regeneration capacity of autologous or allogeneic BM-MSC, as a potential therapeutic strategy to induce formation of new bone tissue and fracture healing. A bioengineering construct, constituted by MSCs and a collagen scaffold, is incorporated into platelet rich plasma (PRP) clot, wich is implanted at the nonunion site defect.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
30
At surgery, fibrotic tissue is removed from the nonunion sites. MSCs/Col/PRP clots are implanted in the site of nonunion. Patients received conventional orthopedic treatment as they needed (osteotomy, external and/or internal fixation systems, etc.)
At surgery, fibrotic tissue is removed from the nonunion sites. MSCs/Col/PRP clots are implanted in the site of nonunion. Patients received conventional orthopedic treatment as they needed (osteotomy, external and/or internal fixation systems, etc.)
Instituto Venezolano de Investigaciones Cientificas
Caracas, Miranda, Venezuela
Clinical evaluation
Time of surgical wound evolution, surgically intervened limb evolution, movility
Time frame: Baseline, 1 and 7 days. 1, 2 and 6 months. 1 and 2 years
Bone consolidation
Time of development changes in bone consolidation by radiological studies
Time frame: Baseline, 1 and 7 days. 1, 2 and 6 months. 1 and 2 years
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