32 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... hand" ± Horner Syndrome ... Carpal Tunnel Syndrome ... #UpperLimb #Extremity ... Myotomes #diagnosis #neurology
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Bone/Joint Causes ... • Sciatica • Tarsal ... cyanosis - Cool extremity ... diagnosis #lower #extremity ... #msk #physicalexam
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
Anterior Cord Syndrome ... hyperextension -> Upper extremity ... Primarily Upper Extremity ... signs #symptoms #msk ... #orthopedics #neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... • Cauda Equina Syndrome ... Commonly caused ... Narrowing of spinal canal ... Myotomes #diagnosis #neurology
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
oticus (Ramsay Hunt syndrome ... • Semicircular canal ... dehiscence syndrome ... • Cogan's syndrome ... Amy Chung, MD, MSc
Causes of Hemiplegia - Differential Diagnosis Algorithm
Cerebral Hemisphere (Contralateral motor cortex)
 • Aphasia
 • Apraxia
 •
Causes of Hemiplegia ... contralateral extremity ... Brown-Sequard Syndrome ... #Hemiplegia #Neurology ... Diagnosis #Algorithm #Causes
Neuro-OphthaImoIogy - Visual Field Defects - Localization Map
 - Optic Nerve Lesion (Monocular vision loss)
 -
Neuro-OphthaImoIogy ... Infection • MS ... NeuroOphthaImoIogy #Neurology ... Diagnosis #Anatomy #Causes ... #Ophthalmology
All About Horner's Syndrome

Horner's syndrome, known as 
"oculosympathetic paresis" by people 
who don't have friends, is
About Horner's Syndrome ... Horner's syndrome ... have friends, is caused ... #Overview #Ophthalmology ... #Diagnosis #Neurology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
- Emergency Causes ... unilateral lower extremity ... or absent lower extremity ... differential #diagnosis #causes ... #neurology
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
One-and-a-half Syndrome ... Skew Deviation Casey ... #Localization #ophthalmology ... #neurology #differential