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The purpose of this six site multi-center study is to determine if BTX-A can alleviate the post-operative pain and improve the functional and quality of life outcomes of children with limb length discrepancy or angular deformity undergoing limb lengthening or deformity correction.
Full description
The specific aims are to determine if BTX-A will:
Methodology: A randomization process for this one time injection will be used to determine who will receive the BTX-A or the placebo. 150 subjects will be recruited; 75 to the BTX-A group and 75 to the placebo group. There will be an equal number of subjects in each group at each site. The medication will be injected intraoperatively into specific major muscles in the lower limb adjacent to the bone or soft tissue being lengthened or corrected at a dose of 10 U/kg with a maximum of 50 U per site, not to exceed a total maximum dose of 400 units. Pain scores, medication dosages, range of motion and an ambulation scale will be measured post-operatively and during the distraction and consolidation phases.
In addition families will be asked to complete six different questionnaires related to pain, quality of life and psycho-social issues at various times during the process. The children will receive standard nursing care and physical therapy and will be followed for three months after the external fixator is removed, for a total time of approximately one year.
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125 participants in 2 patient groups, including a placebo group
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Data sourced from clinicaltrials.gov
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