This trial aims to investigate transplantation of umbilical cord stem cells from patients with paraplegia. The study is being conducted at the General Hospital of Chinese People's Armed Police Forces in Haidian. Stem cells derived from donated umbilical cord blood will be given to the trial participants via the femoral artery. The trial expect to enrol 20 patients with traumatic paraplegia [levels T10 through to L2] between April 2012 and December 2013. Participants will be assessed for complications and for improvement in functions such as bladder contracting capacity as well as sensory responsiveness.