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Pseudomeningoceles and nerve root avulsions suggest complete and non-repairable injuries.

Horner's syndrome is also a predictor of poor outcome.

Klumpke's (lower) - C-8 and T-1. Injury with outstretched arm.

Erb's (upper) - c-4, c-5, and c-6. Frequently birth injuries.

Middle - c-7.