Recovery after brachial plexus injury
Hand to head
Hand to back
Hand to mouth
The "trumpet sign" is named after the way of holding the trumpet in a particular unit of the French army (almost 90° abduction of affected arm when bringing hand to the mouth).
Brachial PlexusPalsies in Infants and Children.North Pacific Pediatric Society March 11, 2011. Raymond Tse, MD Brachial Plexus Program Seattle Children’s Hospital.
Neurological recovery in obstetric brachial plexus injuries: an historical cohort study. Agnes F Hoeksma* Developmental Medicine & Child Neurology 2004, 46: 76–83
Function of the upper limb after surgery for obstetric brachial plexus palsy. C. E. Dumont, V. Forin, H. Asfazadourian, C. Romana From Hôpital d’Enfants Armand Trousseau, Paris, France. J Bone Joint Surg [Br] 2001;83-B:894-900.