<unk>  is considered to be the least common of the three median nerve entrapment syndromes, the other two of which carpal tunnel syndrome and anterior interosseus nerve syndrome
Compression of the nerve occurs at the level of the elbow or at the immediate proximal portion of forearm.
Common in the 4th and 5th decades of life
Women have higher incidence, as well as those with forearm hypertrophy (athletes)
Pronator teres syndrome
Thoracic outlet syndrome
Piriformis syndrome
Distal humerus fracture
Cauda equina syndrome
Radial head fracture
Carpal tunnel syndrome
Essex-Lopresti fracture