<prompt> Klumpkes palsy is due to injury to the following nerves:Inferior trunk of the brachial plexusSuperior trunk of the brachial plexusSubscapular nerveUlnar nerve  <response>: The upper trunk C5 and C6 is the most common area injured and results in the classic Erb palsy. Injury to the lower trunk C7-T1 produces a Klumpke palsy. Klumpke palsy is characterized by good shoulder function but decreased or absent hand function. Brachial plexus injuries may also cause a Horner syndrome unilateral miosis, ptosis, and facial anhidrosis due to disruption of cervical sympathetic nerves. Ref: Wilson P.E., Clayton G.H. 2012. Chapter 28. Rehabilitation Medicine. In W.W. Hay, Jr., M.J. Levin, R.R. Deterding, J.J. Ross, J.M. Sondheimer Eds, CURRENT Diagnosis Treatment: Pediatrics, 21e. 