IMPACCT: Infrastructure for Musculoskeletal Pediatric Acute Care Clinical Trials

ABSTRACT The management of two common upper extremity injuries, pediatric medial epicondyle fractures (MEF) and displaced distal radius fractures (DRF), is controversial with high practice variation. The debate largely focusses on whether to reduce these injuries to restore their usual position or to allow the fractures to heal in

their injured position with simple immobilization. Observational studies support both reduction and simple immobilization for MEF and DRF. In both injuries, there have been few prospective and no randomized studies evaluating their treatment. Given the widespread variation in practice, children are either undergoing

unnecessary procedures and anesthetic events when surgeons opt for reduction under anesthesia/ conscious sedation OR are being undertreated by simple immobilization. Both scenarios are unacceptable in that children face either anesthetic risks and extra costs or poor alignment with potential long term functional disability

To address such clinical dilemmas, the Infrastructure for Musculoskeletal Pediatric Acute Care Clinical Trials (IMPACCT) consortium was organized to develop the infrastructure and experience necessary for multicenter randomized clinical trials. IMPACCT’s leadership has expertise in leading multicenter clinical trials

and its members represent 32 diverse centers from the Pediatric Orthopaedic Society of North America (POSNA). During the IMPACCT Consensus Conference, participants agreed that that MEF and DRF have the equipoise necessary and are the most pressing clinical controversies. A similar priority-setting study from the

United Kingdom identified these questions as important controversies in children’s orthopaedic surgery. POSNA-wide surveys confirmed MEF and DRF treatment variation and surgeons’ willingness to randomize. A multicenter randomized superiority trial of children with MEF and DRF is required to evaluate the

clinical effectiveness of reduction under anesthesia/sedation vs. simple immobilization. The central hypothesis of this proposal is that children treated with reduction under general anesthesia (MEF) or conscious sedation (DRF) will have higher patient reported outcome scores compared to those treated with simple immobilization

alone. Trials on both fractures will be conducted simultaneously to take advantage of the economy of scale and are similar in terms of anatomic location, outcome measures, and whether an intervention is necessary. Thirty- one sites have agreed to recruit, randomize and treat a total of 688 patients according to the pragmatic

protocols. Investigators have partnered with the Trial Innovation Network to increase the efficiency of trial development and execution. NIAMS has awarded this initiative an R34 Clinical Trials Planning Grant. This proposal will support the active study phase when patients are recruited, treated, and followed and when

results are analyzed and disseminated. The completion of these trials will provide a framework, infrastructure and experience for future prospective multicenter clinical trials in pediatric orthopaedics as its results guide clinical decision-making.