<prompt> Seddons Classification all are true except:Complete anatomic division of nerve is classified as NeurotmesisAxonotmesis has Tinels sign positive and progressiveNeurotmesis has complete recovery withwithout surgical interventionSaturday night palsy involves radial nerve  <response>: SEDDONS CLASSIFICATION Neuropraxia: Tinels Sign Negative Temporary physiological disruption of nerve impulse conduction. The loss of function is incomplete. Complete recovery in 3-6 weeks and comes back like lightening, i.e. completely recovers in one go. No Wallerian degeneration takes place Tinels sign is negative. Crutch palsy Saturday night palsy Tourniquet palsy Few traumatic nerve injuries are neuropraxia Axonotmesis: Tinels Sign Positive and Progressive It is axonal breakdown, Tinels sign is positive, Motor March is seen . Recovery is usually not complete. Seen in closed fractures and dislocations Neurotmesis: Tinels Sign is Positive and Non progressive Complete anatomic section of the nerve. No recovery without surgical intervention. Degeneration distal to injuries Secondary or Wallerian degeneration Degeneration in proximal segment Primary or retrograde degeneration At proximal end forms-- Neuroma At distal end forms-- Glioma 