<prompt> Roots involved in Erbs palsy arePosterior primary rami of C6- C7Anterior primary rani of C5-C6Posterior primary rami of C8-T1Posterior primary rami of C7-C8  <response>: Erbs point is formed by the roots of C5 and C6, anterior and posterior divisions of upper trunk, suprascapular nerve and nerve to subclavius muscle. So the nerve root involved in Erbs palsy is C5 and C6. 