What is the primary characteristic of paraplegia?

Paraplegia is primarily characterized by paralysis of the lower body. This condition occurs due to injury or damage to the spinal cord, typically at the thoracic level or below, which impairs the ability to control the muscles of the legs and lower trunk. Patients with paraplegia retain full use of their arms and upper body but experience varying degrees of loss of motor and sensory function in the lower body, depending on the severity and location of the spinal cord injury. This specific paralysis distinguishes paraplegia from other similar conditions that may involve upper limb involvement or different patterns of weakness.