Abstract

Monteggia fracture-dislocation is combination of proximal ulna fracture with radial head dislocation. When a  child is falling on his/her arm in an extension and pronation position, body weight forces the elbow joint to external rotation by applying torsional strength to humerus and ulna. In this situation, deformed ulna will continue to force the radial head to hiperpronation. If the torsional force is large enough radial head will be out if the plastic deformation of the ulna is exceeded,it will break the ulna. Complications of this fracture are non-union, radiohumeral ankylosis, radioulnar synostosis and posterior interosseoz nevre or radial nerve palsy. Nerve palsy usually recovers spontaneously and rarely indicates exploration. In this article; we report a case of radial nerve entrapment caused by radial head compression after Monteggia fracture-dislocation and treated by external and internal microsurgical neurolysis in a 7 year-old girl patient.

Key Words: Monteggia Fracture; Radial Nerve; Nerve Entrapments.