[Injury of the deep branch of the ulnar nerve]

The authors report the clinical material from the Department of Neurosurgery, WAM in Lódź from the last 11 years including cases of damage to the deep branch of the ulnar nerve. In view of the importance of this branch for the function of the hand, damage to it requires very careful surgical management with autogenous graft. Sometimes this is technically difficult in view of the topographic conditions in this area. Damage to the deep branch of this nerve is usually associated with damage to the sensory part of the ulnar nerve, to the median nerve and tendons of finger flexors.