<prompt> Which of the following does not involve nerve damage?Guillain barre syndromeErbs paralysisVolkmanns paralysisNeurotmesis  <response>: Guillain barre syndrome, erbs paralysis, and neurotmesis primarily involves nerves, whereas volkmanns paralysis is primarily ischemic paralysis of muscles due to raised intracompamental pressure vascular phenomenon. It may secondarily lead to nerve ischemia and damage. Ref: Tachdjians Pediatric Ohopedics 3e, Page 2139-77, 2060; Rockwood and Greens Fracture in Children 6e, Page 543-86; Apleys 8e, Page 596-99, 563-64; Watson Jones : Fracture and Joint injuries 6e, Page 591-609. 