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ASIA A
5%
313/5789
ASIA B
84%
4844/5789
ASIA C
4%
252/5789
ASIA D
293/5789
ASIA E
1%
61/5789
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This patient has some sensory function but no motor function below the injury level. His bulbocavernosus reflex is intact so we know he is no longer in spinal shock. Therefore, he would be classified as an ASIA B. The imaging studies show a type II odontoid fracture, a congenital fusion at C2/3 and C4/5, and a large soft disc herniation at C3/4 with spinal cord compression and myelomalacia. The ASIA system describes the exam below the level of the injury. ASIA A: Complete. No motor or sensory ASIA B: Incomplete. No motor function but some remaining sensory ASIA C: Incomplete. 50% or more of muscles below injury are less than Grade 3. ASIA D: Incomplete. 50% or more of muscles below injury are equal to or greater than Grade 3. ASIA E: Normal Furlan et al reviewed the ASIA classification in the assessment of motor and sensory function in patents with spinal cord injury (SCI). Although many studies suggest convergent and divergent construct validity, they determined that the ASIA classification is an adequate instrument to evaluate patients with SCI. Illustration A outlines the ASIA classification. The complete ASIA assessment chart is in Illustration B.
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