Neuropathology of Spinal Cord Injury and ASIA Impairment Scale
The spinal cord is the vital, high-velocity conduit connecting the cerebral cortex with the peripheral nervous system. Traumatic mechanical injury — frequently caused by high-velocity motor vehicle collisions on Eastern Province expressways, industrial occupational falls, or non-traumatic transverse myelitis — interrupts ascending sensory and descending corticospinal motor tracts.
Bidaya utilizes the American Spinal Injury Association (ASIA) Impairment Scale (AIS) to guide clinical pathways:
1. Complete Injuries (ASIA A): Complete absence of sensory and motor function in sacral segments S4-S5. Therapy emphasizes absolute functional independence: maximizing innervated muscle groups, mastering wheelchair transfers, and home modification.
2. Incomplete Injuries (ASIA B, C, D): Preservation of sensory or motor pathways below the neurological level of injury. Therapy harnesses spinal neuroplasticity through high-intensity task-specific practice, locomotor retraining, and weight-bearing upright standing.
3. Neurological Level of Injury (NLI): Distinguishing between cervical injuries resulting in tetraplegia (impairing upper extremities, trunk, and respiration) and thoracic/lumbar injuries causing paraplegia (preserving arm and shoulder function).
