Human muscle can repair itself on its own, so long as it doesnt suffer severe damage. But researchers now say that a new surgical technique can enable the regeneration of some muscle after large amounts are lost in accidents or war injuries, offering a much improved path to recovery. The technique involves implanting a small biological scaffolding at the injury site and then entering patients into an aggressive physical therapy regimen, and researchers say that the initial results have led to quality of life improvements for all patients of the procedure. In all cases, the patients had previously lost over half of their treated limbs muscle and were no longer seeing improvements through physical therapy.