A complete spinal injury occurs when the spinal cord is fully damaged, resulting in a total loss of sensation and motor function below the injury site. This type of injury can lead to paralysis, affecting the limbs and trunk, depending on the location of the injury along the spine. Individuals with a complete spinal injury may experience complications such as respiratory issues, pressure sores, and bladder dysfunction. Rehabilitation and support are crucial for managing daily activities and improving quality of life, although recovery of function is not possible in cases of complete injury.