RT Journal Article SR Electronic T1 Radial nerve palsy in the newborn: a case series JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1367 OP 1370 DO 10.1503/cmaj.110272 VO 183 IS 12 A1 Fatema S. Alsubhi A1 Abdullah M. Althunyan A1 Christine G. Curtis A1 Howard M. Clarke YR 2011 UL http://www.cmaj.ca/content/183/12/1367.abstract AB Background: Peripheral nerve palsies of the upper extremities presenting at birth can be distressing for families and care providers. It is therefore important to be able to identify patients whose diagnosis is compatible with full recovery so that their families can be reassured. Methods: We conducted a retrospective review of all infants presenting with weakness of the upper extremity to our clinic between July 1995 and September 2009. We also conducted a review of the current literature. Results: During the study period, 953 infants presented to our clinic. Of these patients, 25 were identified as having isolated radial nerve palsy (i.e., a radial nerve palsy in isolation with good shoulder function and intact flexion of the elbow). Seventeen infants (68.0%) had a subcutaneous nodule representing fat necrosis in the inferior posterolateral portion of the affected arm. Full recovery occurred in all patients within a range of one week to six months, and 72.0% of the patients (18/25) had fully recovered by the time they were two months old. Interpretation: Although the outcome of obstetrical brachial plexus palsy is highly variable, isolated radial nerve palsy in the newborn carries a uniformly favourable prognosis.See related commentary by Lundy on page 1348 and at www.cmaj.ca/lookup/doi/10.1503/cmaj.110972.