Dr. Ebraheim’s educational animated video describes the difference between Warteberg's Sign and Wartentberg's Syndrome.
The Wartenberg’s Sign is an indication of ulnar nerve palsy. There is a difference between Wartenberg’s Sign and Wartenberg’s Syndrome. Wartenberg’s Sign refers to the abduction of the fifth finger due to ulnar nerve palsy. Wartenberg’s syndrome refers to the area of nerve entrapment for the superficial branch of the radial nerve. The Wartenberg’s Sign is due to an ulnar nerve injury and consists of abduction of the fifth finger, caused by an unopposed action of the ulnar insertion of the extensor digiti quinti (radial nerve innervation). There is also a loss of the action of the lumbricals (ulnar nerve). It occurs due to paralysis of the palmar interosseous muscle that abducts the little finger. The unopposed action of the extensor digiti quinti causes the finger to rest in a more abducted position. With Wartenberg’s syndrome, the nerve is likely to become compressed between the brachioradialis and the ECRL tendonds, especially during forearm pronation. Wartenberg’s syndrome is caused by entrapment of the superficial branch of the radial nerve at this point where the nerve arises from beneath the muscles. There will be altered sensation associated with Wartenberg’s syndrome due to entrapment of the superficial branch of the radial nerve.

Become a friend on facebook:
  / drebraheim  

Follow me on twitter:
https://twitter.com/#!/DrEbraheim_UTMC

Background music provided as a free download from YouTube Audio Library.
Song Title: Every Step