7 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Reflexes: • Knee ... • Cauda Equina Syndrome ... stopping walking (vascular ... #Myotomes #diagnosis ... #neurology #sensory
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity Dermatomes ... and Myotomes Motor ... #Myotomes #diagnosis ... #neurology #sensory ... #motor #arm #physicalexam
Types of Facial Paralysis - Peripheral vs Central Lesions

Facial weakness or paralysis may result either from
involving the upper motor ... neurons on the left are ... #CNVII #CN7 #Peripheral ... #Bells #Palsy #Neurology ... #Diagnosis *
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
Spinal Root Sensory Motor ... Biceps Reflex C6 ... None T7-T12 See Dermatomes ... #differential #diagnosis ... #Neurology #Spine
Left Abducens Spasm on Physical Exam

A 50 yr male with left facial spasm and diplopia, with
male with left facial ... paroxysmal brainstem syndrome ... Abducens #Spasm #CNVI ... #CN6 #PhysicalExam ... #neurology #video
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
Differential Diagnosis ... lumbar stenosis • Vascular ... region (S2-S4 dermatomes ... MRI- Sagittal, axial ... #causes #neurology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
- Differential Diagnosis ... Sensory and/or motor ... pulse deficits vascular ... bruits, asymmetric arm ... affects the skin, neurologic