Black and purple color of the feet in paraplegia is considered to be poor blood supply to the feet, which is usually caused by interruption of blood supply due to vascular occlusion or embolism, etc. In severe cases, surgical treatment is required.
Due to the loss of motor function of lower limbs in paraplegia, long-term bed-ridden or wheelchair-bound, the blood flow of the whole body may become slow, and the blood vessels may also gradually become diseased. When vascular lesions in the lower limbs become occluded, or when the arteries in the feet are blocked by emboli, the blood supply to the feet can be interrupted, and the skin of the distal part of the feet becomes purple or black due to gradual ischemia and hypoxia.
For paraplegic foot black purple color indicates poor local blood supply, consider tissue ischemia or even necrosis, so it is recommended to go to the hospital and choose the appropriate treatment according to the situation.