There are articles written in regard to stem cell in children with cerebral palsy out of India with some success in improvement of GMFCS. Also there is pending research on stem cells in children with sensory neuronal hearing loss in children with C.P. There is a article on safety in pediatric TBI though no real report on how they did regarding outcome.
New protocols for regenerative treatment along with the parallel development of tissue engineering technologies are changing traditional knowledge and treatment possibilities for young patients so I can see a bright future in this issue. Both the general public and a major proportion of clinicians are excited by the idea.
However there is still very important issue of safety in this group of patients. Let ´s hope that ethical issues are not clouded by emotions and politics, but decisions are made based clearly on science.
Anyone who is keen to cooperate is more than welcome.
In malalignent disorders the use of stamcells in joints will be useless, because the overload and shearloads, due to malignement will degenerate those stemcells even quicker than the original healthy ( cartilage cells). In children malignement should be treated in most cases conservatively with dedicated excersises ( get rid of the neuromuscular tension in the system) and bracing. And in seriouos cases with realignment by osteotomies.
I have seen a presentation by Dr. Jeremy Mao few weeks ago on Inside 3D Printing show in New York, and i think you should check his work and maybe ask him directly about his experience. He had some cases there which i guess could be beneficent for your research.