More than 500,000 patients in the U.S. suffer from skeletal muscle loss caused by traumatic injuries, including gunshots or blast injuries suffered on the battlefield. Muscle wounds with more than 20 percent muscle mass loss incur a decrease in function due to impaired muscle regeneration, which serves to restrict motion. Currently, there is no clinical standard of care for volumetric muscle loss (VML), and treatment options are limited. Long-term solutions are therefore required to address the shortcomings of current therapies.
The goal of this project is to develop a reliable, effective, and customizable method to place an implantable scaffold capable of addressing the unmet need of patients recovering from VML. Indranil Sinha, MD, and his team are utilizing a custom-built, hand-held printer for 3D printing of the scaffold directly onto the injured muscle wound bed. The handheld printer is robust and can be used in any setting without the need to access an expensive imaging modality. It can even be used in settings without the physical presence of the surgeon, such as during prolonged and en route care of the patient.
With funding from the Stepping Strong Breakthrough Award, the team’s objective is to demonstrate that accelerated muscle formation and integration can be achieved by implanting a hydrogel, impregnated with growth factors, using a pen printer. In addition to potentially improving muscle recovery, the device is small and will minimize response time to traumatic VML injuries.