View clinical trials related to Pseudarthrosis.
Filter by:The purpose of this clinical trial is to check the non-inferiority and lower morbidity of the use of bone marrow mononuclear cells seeded onto a porous matrix of calcium phosphate, for the consolidation of tibial bone defects (pseudoarthrosis), compared with autologous bone graft.
The aim of the study is to determine whether the evaluation of pro-osteogenic activity of autologous serum may predict the effectiveness of platelet gel in regenerating bone tissue in patients with nonunions of long bones. Serum samples will be collected before the surgery, and their pro-osteogenic activity will be evaluated by using a bioactivity test (mineralization assay). In order to determine whether the pro-osteogenic activity of the serum is able to discriminate between individuals who will achieve or will not achieve bone consolidation, the laboratory results will be correlated with clinical and radiographic results at 12 months, when patients will be considered as healed or not healed.
In this study the investigators are presenting the advantages as well as the disadvantages of ACUTE SHORTENING AND RELENGTHENINIG VS SEGMENT TRANSPORT methods.
Treatment of nonunion, delayed union and malunion fractures of long bones remains problematic. The definition of nonunion is a failure of the fracture to heal in six months in a patient in whom progressive repair had not been observed radiographically between the third and sixth month after the fracture. First of all good surgical techniques are stable immobilization must be obtained and local sepsis excluded. Then stimulation of the callus is required. Numerous techniques have been developed ranging from invasive interventions (including internal fixation with the use of bone graft or bone graft substitutes) to non invasive procedures (ultrasound and pulsed electromagnetic fields). Recently, autologous cell therapy was presented as an interesting approach. The concept of such therapies is based on the effect of stem cells presented in the bone marrow and able to be transformed in osteoblast cells. The percutaneous technique of autologous bone-marrow grafting is a minimally invasive alternative able to produce a good healing of the fracture. The efficacy is dependent of the concentration in progenitor cell reinjected. An optimization of this type of treatment could be achieved using a technique to increase the differentiation of the bone marrow cells in preosteoblasts before the injection in situ by an adequate culture. Therefore we would like to start a pilot open study on the feasibility and the efficacy of implantation of preosteoblasts into nonunion. Two different presentations exist: the atrophic and the hypertrophic pseudarthrosis in relationship with radiological features of bone proliferation at the tip of bone fragments. Some data support that atrophic and hypertrophic nonunion fractures could have different physiopathological factors. So, in a first time we only would evaluate the atrophic form and to determine in an open study the effect of the implantation of preosteoblasts into atrophic nonunion.
To prospectively collect radiographic and outcome data on patients who are having cervical spine fusion surgery with the VueLock⢠Anterior Cervical Plate System