截瘫 specifically refers to lower-body paralysis from spinal cord injury or disease. Quadriplegia (paralysis of all four limbs) is
四肢瘫痪 (sìzhī tānhuàn) or
全瘫 (quántān). The qualifier
高位截瘫 (gāowèi jiétān, 'high-level paraplegia') is used when the spinal injury is in the cervical region and affects more than just the legs.