One of the more effective surgical methods for the correction of bone defects is the transport by osteogenesis by progressive distraction with an external fixation device, since it allows to extend the bone and to correct angular deformities when required. The Central Military Hospital of Bogota (HMC) as the referral center of wounded in battle from the Military Forces, handles a high index of patients with open fractures by high speed firearms, fragmentation weapons or land mines, which cause open bone fractures and extensive soft tissue damage. For these patients the best alternative is the external fixation devices, which stabilize the