凡是胸腰脊髓损伤或病变引起双侧下肢瘫痪,叫作截瘫。这里所指的病变包括脊髓炎、脊髓空洞症、脊髓压迫症等,但是更多的截瘫是由损伤所致,主要是胸腰椎竹折后,碎裂的骨片损伤或压迫脊髓的缘故。损伤或病变脊髓水平以下神经支配的躯体及四肢的感觉与运动神经功能都会发生不完全或完全丧失,于是双下肢不能活动,皮肤的各种感觉消失,连排便、排尿都会发生困难。 众所周知,人类的性功能都是在神经系统统一指挥下进行的,既包括大脑皮层、脊髓等中枢神经系统,也包括众多支配性器官的周围神经。例如在脊髓腰骶段里边,男子存在有专门的“勃起中枢”和“射精中枢”,接受到大脑皮层的工作命令后,这些神经便会发布阴茎勃起与射精的 All thoracic and spinal cord injury or lesions caused by bilateral lower limb paralysis, called paraplegia. Myelodysplastic syndromes include myelitis, syringomyelia, spinal cord compression, etc. However, more paraplegia is caused by injuries, mainly caused by broken or fractured bone fragments of the thoracolumbar vertebra. Lesions or lesions below the level of the spinal cord innervating the somatic and limb sensory and motor nerve function will occur incomplete or completely lost, so both lower extremities can not move, the skin feeling disappeared, defecation, urination will be difficult. As we all know, human sexual function is under the unified command of the nervous system, including both the cerebral cortex, spinal cord and other central nervous system, but also many peripheral organs, including the dominant nerve. For example, in the lumbosacral spinal cord, men have a special “erection center” and “ejaculation center”, after receiving the work order of the cerebral cortex, these nerves will publish penile erection and ejaculation