Trauma to the peripheral nervous system

Cross cut of the nerveScheme:1,2-epineurium3-perineurium4-endoneurium5-nerve fibers6-blood vessels

Cut of myelin nerve fiber

1-axon2-myelin3-lemocyte4-перехват Ранвьє

Myelin nerve fiberNucleus of schwann myelinschwann cell axoncell

Nonmyelin nerve fiber

axon schwann cell

Types of nerve injuryа-complete rupture with neuroma of proximal endб-partial rupture with formation of lateral neuromaв-nearly complete ruptureг-intratrunkal .nerve injury with formation of

cicatrix

Trauma to the median nerve: “monkey hand”

Trauma to the ulnar nerve: “claw-hand”

Trauma to the radial nerve: drop hand.

Injury to tibial nerve

Drop foot at injury to the fibular nerve

Epineural and perineural sutures

Perineural suture

Nerve grafting