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Localization of Peripheral Nervous System Lesions

This video teaches localization of peripheral nervous system lesions to neurology clerks. It reviews major arm nerves and the brachial plexus, distinguishing nerve from root injuries. In the leg, it reviews the femoral, obturator, and sciatic nerves (plus tibial and common fibular branches) and how to differentiate them from lumbosacral radiculopathies. Anatomy, motor/sensory functions, reflexes, and clinical clues are integrated to pinpoint each lesion. 00:07 - Introduction 01:08 - OBJECTIVES 03:19 - CASE 1: SENSORIMOTOR DEFICITS OF THE ARM 04:51 - LOCALIZATION OF ARM WEAKNESS 06:57 - NERVES OF THE ARM 08:01 - Ulnar Nerve 13:31 - Median Nerve 21:28 - Musculocutaneous Nerve 23:07 - Radial Nerve 30:06 - Axillary Nerve 31:59 - Summary and Review 34:49 - BACK TO THE CASE... 37:00 - DISTINGUISHING NERVE FROM ROOT INJURIES IN THE ARM 41:21 - BRACHIAL PLEXUS LESIONS 44:11 - CASE 2: SENSORIMOTOR DEFICITS OF THE LEG 47:00 - NERVES OF THE LEG 47:38 - Femoral Nerve 51:19 - Obturator Nerve 52:50 - Sciatic Nerve; Tibial and Fibular Branches 01:02:23 - Summary and Review 01:05:16 - BACK TO THE CASE... 01:09:10 - DISTINGUISHING NERVE FROM ROOT INJURIES IN THE LEG SLIDES https://drive.google.com/file/d/1AP_0... CREATED AND NARRATED BY: Khushi Patel, MD Medical Student at Robert Wood Johnson Medical School PGY1 at NYU Grossman School of Medicine PRODUCED BY: Igor Rybinnik MD Neurology Clerkship Director Division of Stroke and Neurocritical Care Department of Neurology Rutgers Robert Wood Johnson Medical School CONTENT EXPERT: Ashley Weng, MD Megan Leitch, MD Division of Neuromuscular Department of Neurology Rutgers Robert Wood Johnson Medical School MEDICAL STUDENT REVIEWERS: Khushi Patel Rutgers Robert Wood Johnson Medical School IMAGES, VIDEO ADAPTED FROM: Godkin O, et al. BMJ Case Rep 2016 Netter, FH. Atlas of Human Anatomy. 7th ed., Elsevier, 2018. Netter FH. The Netter Collection of Medical Illustrations. 2nd ed. 2013, Saunders. Blumenfeld, H. (2020). Neuroanatomy through clinical cases (3rd ed.). Sunderland, MA: Sinauer Associates, Inc. Vecteezy_18927654 (Karim Boiko) REFERENCES Olsen KS, Gilman S. (2010). Aids to the examination of the peripheral nervous system (5th ed.). London: Elsevier. Brazis PW, Masdeu JC, Biller J. (2021). Localization in clinical neurology (8th ed.). Lippincott Williams & Wilkins. DISCLAIMER: Please note that this material was simplified for educational purposes. For patient management, please review your clinical society's guidelines and engage expert consultation where appropriate. Also, the opinions of the presenters do not necessarily reflect those of Rutgers Robert Wood Johnson Medical School, Robert Wood Johnson University Hospital, RWJBarnabus Health, or Rutgers University as a whole.