Snapshot A G1P1 woman gives birth to a boy at 41 weeks gestational age via vaginal delivery. Labor was prolonged due to shoulder dystocia which required a forceps delivery. The child's APGAR scores were 8 and 9 at 1 and 5 minutes, respectively. The child's weight at birth is 9 pounds 8 ounces. On exam, the baby's left upper extremity is notable for arm adduction, elbow extension, and forearm pronation. Introduction Clinical definition login to view 1 more bullet Epidemiology login to view 10 more bullets Etiology login to view 7 more bullets Pathoanatomy login to view 28 more bullets Associated conditions login to view 3 more bullets Prognosis login to view 4 more bullets Presentation Symptoms login to view 1 more bullet Physical exam login to view 13 more bullets Imaging Radiographs login to view 4 more bullets Magnetic resonance imaging (MRI) login to view 4 more bullets Differential Klumpke palsy login to view 5 more bullets Radial head subluxation login to view 4 more bullets Treatment Nonoperative login to view 4 more bullets Complications Joint contracture Hemidiaphragm login to view 1 more bullet