Shoulder dislocation is the most common feature in emergencies, while the
anterior dislocation of the glenohumeral joint is the most frequent and requires
reduction. Accompanied nerve injury is common with an incidence of 21%, while
radial nerve palsy is very rare. We describe the case of a 56-year-old man who
presented with an anterior dislocation of the left shoulder due to a fall on an
outstretched hand with wrist drop 8 hours after injury. Neurological examination
revealed loss of sensation along the radial border of the forearm. Closed
reduction with Kocher procedure was performed. Magnetic resonance image
demonstrated a rotator cuff tear, and 3 weeks after the injury electromyography
showed complete radial nerve palsy. A physiotherapy program was applied to the
wrist and fingers with the goal of maintaining a full passive range of motion in
all joints affected while shoulder rehabilitation started 6 weeks after his
fall. Isolated radial nerve palsy associated with an anterior dislocation of the
shoulder is very rare but not impossible to occur. Correct diagnosis of the
nerve injury associated with the anterior dislocation is very important because
it has serious implications on the management and activity morbidity.