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Table 1 Modified MacNab Criteria assessing long-term functional outcome

From: The microendoscopic approach for far lateral lumbar disc herniation: a preliminary series of 33 patients

Result

Criteria

Excellent

No pain, no restriction of mobility, able to return to normal work and activities

Good

Occasional non-radicular pain; relief of presenting symptoms; able to return to modified work

Fair

Some improved functional capacity; still handicapped and/or unemployed

Poor

Continued objective symptoms of root involvement; additional operative intervention needed at the index level, irrespective of length of postoperative follow-up.