Table 1.

Modified McCormick classification (MCC) grade for spinal cord tumors

MCC Grade	Definition
1	Neurologically normal
	Gait normal
	Normal professional activity
1b	Tired after walking several kilometers
	Running is impossible, or moderate sensorimotor deficit does not significantly affect the involved limb
	Moderate discomfort in professional activity
2	Presence of sensorimotor deficit affecting function of involved limb
	Mild to moderate gait difficulty
	Severe pain or dysesthetic syndrome impairs quality of life
	Independent function and ambulation maintained
3	More severe neurological deficit
	Requires cane and/or brace for ambulation or maintains significant bilateral upper-extremity impairment
	May or may not function independently
4	Severe neurological deficit
	Requires wheelchair or cane and/or brace with bilateral upper-extremity impairment
	Usually not independent